
Calculus
The number N of US cellular phone subscribers (in millions) is shown in the table. (Midyear estimates are given.) t 1996 1998 2000 2002 2004 2006 N 44 69 109 141 182 233 (a) Find the average rate of cell phone growth between the following years. In each
asked by Christina on October 29, 2011 
calculus
A company manufactures and sells x cellphones per week. The weekly pricedemand and cost equations are given below P=400.5x and C(x)=20000+130x What price should the company charge for the phones and how many phones should be produced to maximize the
asked by Harold on June 26, 2012 
Statistics
Q1:(a) Make a relative frequency table of the data. Enter your answers to three decimal places. Cell Phone Owned Relative Frequency Android smartphone iPhone smartphone Blackberry smartphone Cell phone not smartphone No cell phone Total (b) Round your
asked by Robert on March 13, 2017 
STATISTICS
A particular cell phone company offers 4 models o phones, each in 6 different colors and each available with any one of 5 calling plans. How many combinations are possible?
asked by Anonymous on April 5, 2013 
statistics
A manufacturer of cell phones has decided that an assembly line will be considered to be operating satisfactorily if less than 0.02% of the phones produced per day are defective. To check the quality of a day's production, the company decides to randomly
asked by Alyssa on February 22, 2012 
College Algebra
Suppose that the price per unit in dollars of a cell phone production is modeled by p = $45 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that will
asked by Bri on October 5, 2016 
Statistics
The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 90% of students now own a cell phone and 10% do not own a cell phone. Fifteen
asked by Mackenzie on December 3, 2014 
math Please help me with part b
The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made
asked by joelle on April 8, 2010 
college algebra
suppose the revenue in dollars from selling x cell phones is R(x)= 1.2x^2+220x. the cost in dollars of selling x cell phones is C(x)=0.05x^32x^2 +65x+500. find the profit function P(x)=R(x)C(x). find the profit if x=15 hundred cell phones sold
asked by Carol on February 27, 2012 
precal
A cell phone company’s profit is modeled by the function p(x) = 10x − x2 − 1, where p is expressed in thousands of dollars and x is the number of phones sold in hundreds. How many phones must the company sell to make a profit of more than $15,000?
asked by laura on April 13, 2012 
Math
Please show me how to set it up and to solve: A cell phone company sells about 500 phones each week when it charges $75 per phone. It sells about 20 more phones per week for each $1 decrease in price. The company's revenue is the product of the number of
asked by Jane on February 11, 2012 
Stats
Suppose the number of cell phones in a household has a binomial distribution with parameters n = 17, and p = 40 %. Find the probability of a household having (Keep at least 4 digits) (a) 11 or 13 cell phones? (b) 11 or fewer cell phones ? (c) 14 or more
asked by terry on July 6, 2017 
Civics
A company decided to pass a policy banning cell phones on their property. A group of employees collected signatures to protest. Many of the coworkers who signed the petition were later fired because the petition was deemed disruptive. A. The employees
asked by Carla on May 24, 2017 
Statistics
A study of 420,048 cell phone users found that 135 of them developed cancer of the brain or nervous system. prior to this study of cell phone use the rate of such cancer was found to be 0.0333% for those not using cell phones. Complete parts (a) and (b) a.
asked by Rob on April 30, 2013 
Algebra
A cell phone company orders 400 new phones from a manufacturer. If the probability of a phone being defective is 2.1%, predict how many of the phones are likely to be defective. Round your answer to the nearest whole number. I'm really sorry but I need
asked by Lindsey on May 19, 2020 
Statistics
12. The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 94% of students now own a cell phone. Twenty five students are to be selected
asked by Rodney on April 19, 2012 
Algebra
A cell phone company orders 400 new phones from a manufacturer. If the probability of a phone being defective is 2.1%, predict how many of the phones are likely to be defective. Round your answer to the nearest whole number.
asked by Lindsey on May 19, 2020 
Math
It takes a company 4hrs to build 1,300 cell phones. If the company continues working at the same rate, how many hours will it take to bulid 39,000 cell phones?
asked by Amy on November 17, 2015 
business mgmt
A company looking for venture capitalist funding is deciding on the design of its operating system for its new phone. The first option is to simply buy the OS from another company. This would result in sales of either 10,000 units if the market is not
asked by jeannie on April 11, 2015 
Economics
The strongest argument to favor government regulation of cell phone service grids is that A. there are too many cell phone service towers B. the government could provide better cell phone service C. in some metropolitan areas there are too many choices fro
asked by Bailey on May 22, 2014 
Statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported
asked by Kathryn on January 21, 2015 
pre calculus
You have a $50 coupon from the manufacturer good for the purchase of a cell phone. The store where you are purchasing your cell phone is offering a 20% discount on all cell phones. Let x represent the regular price of the cell phone. (a) Suppose only the
asked by Danielle on May 1, 2014 
Grammar Check
Firstly My teacher has said no "you or yous" in the whole of the essay. So if I put "Keep Your Mind on the Road" as a title.. is it appropriate? Should I put "Keep the Mind on the Road" instead? Moreover, my friend says they are some grammar mistakes in my
asked by HM on December 5, 2011 
Social Studies
A popular cell phone manufacturer begins selling a new phone with many unique features. Lots of people want to buy the new phone. The old phone cost $149. What is the most likely price of the new phone? $79 $129 $149 $199 Is it $199?
asked by Anonymous on September 18, 2013 
English
I need to interview a group of American 16yearoldstudents who are visiting our school. I hope you can help me wiht the questionnaire. Thank you. 1) How often do you have English a week/during the week/every week/per week? 3) How much free time do you
asked by Mike on March 29, 2011 
Statistics
Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean, variance, and standard deviation for this probability distribution. X 4 5 6 8 10 P (X) 0.4 0.3 0.1 0.15
asked by Victor on April 10, 2012 
drivers ed
I have to do a project and its for my drivers ed class. I chose to do Cell Phones and Driving. I need website sources but when I search for them I keep getting a bunch of articles talking about how that certain state or city has a new law banning cell
asked by james on March 3, 2008 
Gr10 Math
Charlene is looking into cell phone plans. Cell plus gives unlimited minutes for $50/month.A1 Cell offers a $40 monthly fee, plus 5¢/min for any time over 300min oer month. a)Define two variables and write a linear equation to represent the charges for
asked by Ana on September 25, 2011 
math
A cell phone company charges a $12.95 monthly service fee and $0.03 per minutes for all local calls. Find an equation that represents the monthly cell phone bill y in terms of the number of minutes used x.
asked by crissy on January 14, 2020 
statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported
asked by Kathryn on January 21, 2015 
statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported
asked by Kathryn on January 21, 2015 
Algebra
The cost of producing cell phones is represented as C=mx+b, where m is the marginal cost, x is the number of phones produced, b is the fixed cost, and C is the final cost. a. If the fixed cost is $75 and the marginal cost is $8, write the cost equation. b.
asked by Steveo on February 11, 2014 
statistics
A cellular phone manufacturer randomly selects 5 phones from every batch of 50 produced. If at least one of the phones is found to be defective than each phone in the batch is tested individually. Find the probability that the entire batch will need
asked by TA on May 6, 2012 
finite math
a cellular phone manufacturer randomly selects 5 phones from every batch of 50 produced. if at least one of the phones is found to be defective, then each phone in the batch is tested individually. find the probability that the entire batch will need
asked by Sim on November 24, 2013 
statistics
A cellular phone manufacturer randomly selects 5 phones from every batch of 50 produced. If at least one of the phones is found to be defective than each phone in the batch is tested individually. Find the probability that the entire batch will need
asked by TA on May 6, 2012 
Please can help me solving my problems(Probality)
A manufacturer makes mobile phone. The manufacturer employs are inspector to check the quality of its product. The inspector tested a random sample of the phone being defective as 0.049. Ashmita buys three of the phones made by the manufacturer. Find the
asked by Fakaapo. Suetusi on April 12, 2012 
math
Paulo earns a salary of 15000$ per month for selling cell phones. He receives an extra 30$ for each cell phone over 100 units that he sells. How much will be make if he sells R cell phones? 50 cell phones?
asked by Jacob on November 2, 2017 
English
1. The cell phone vibrates. 2. The specific cell phone (I showed you before) vibrates. 3. Any cell phone vibrates. 4. The cell phone is vibrating. [Does #1 mean #2 or #3? In #4, the specific phone is vibrating. So, no problem. However, all cell phones do
asked by rfvv on October 17, 2017 
algebra
Discount Electronics ordered three dozen cell phones from the manufacturer. If the total order amounted to $1,980, what was the cost of each phone?
asked by Ralph Willis on September 19, 2014 
Math
A company selling cell phones has a total inventor of 800 phones. Of these phones, 400 are smartphones and 240 are black. If 200 phones are not black and not a smartphones, how many are black smartphones?
asked by Anonymous on July 10, 2016 
english
i have written an argument paragraph, but my grammar is bad. so can someone tell me how to proofread my paragraph. thx The issue of whether cell phone is endangering people¡¦s safety on the road is still hotly debated. The article, ¡§Cell phones: a
asked by jessie on February 13, 2008 
phone charges project
Okay I need to know something about cell phones and land lines. My parents can't answer this because we don't have a land line anymore. We just have cells phones. Okay my question is if someone with a cell phone calls a land line person long distance will
asked by Kayla on February 23, 2007 
Algebra 1
Mrs. Crenshaw has confiscated 4 cell phones from 4 different students because they used them during class. To get the cell phones back, they have to answer the following question: What is the probability that no student receives his or her own phone if
asked by Jackie on March 8, 2014 
algebra
. Mrs. Crenshaw has confiscated 4 cell phones from 4 different students because they used them during class. To get the cell phones back, they have to answer the fol lowing question: What is the probability that no student receives his or her own phone if
asked by marissa on March 10, 2014 
English
1. When you call to others, use the home phone. 2. Call to others' home phone numbers. 3. With the home phone, call to others' home phones. Don't use cell phone when you call others' cell phones. Use the Interphone. It's much cheaper. (Are the expressions
asked by rfvv on August 26, 2010 
math
75% of teenagers own cell phones and ofthose who own cell phones, 87% use text messaging. 1. What % of teens own cell phones AND text? 2. Among those who own cell phones and text, 15% send more than 200 texts a day, or more than 6,000 texts a month. What %
asked by help please on February 21, 2013 
Algebra1
A CELL PHONE ORDDERS 500 NEW PHONES FROM A MANFACTURE.IF THE PROBABLITY OF A PHONE BEING DEFECTIVE IS 2.6% PREDICT HOW MANY OF THE PHONES ARE LIKELY TO BE DEFECTIVE.ROUND TO THE NEAREST WHOLE NUMBER
asked by devin on December 5, 2011 
7th Grade Journalism/Interview
I had to give an interview to a parent about Teens and Cell phones. I got ten questions, gave the interview, and reported results. Thanks for any and all feedback. Cell Phones and social networking 1) Do you think that teenagers, and kids, need to be more
asked by katt♥ on December 5, 2012 
Communication in the Workplace
Imagine that you have taken a new job as head of Human Relations (HR) for an upandcoming software firm. Your 150 employees are hip, smart and tech savvy. They are also big cell phone users. Cell phones are an important tool for your business
asked by Patrick on April 15, 2015 
statistics
A customer service division of a telecommunications firm receives 100 mobile phones for repair on a particular week. 18 of the phones are less than a year, 60 phones are more than a year but less than 2 years and the rest are older than 2 years. The
asked by Anonymous on January 20, 2016 
Statistics
The question is: In a study of 420,000 cell phone users in Denmark. It found that 135 developed cancer of the brain or nervous system. If we assume that such a cancer is not affected by cell phone, the probability of a person having such a cancer is
asked by Norilyn on March 24, 2011 
English
1. The cell phone vibrates when somebody calls me. 2. The cell phone vibrates when someone calls me at the phone. 3. The cell phone vibrates when a text message comes/arrives. 4. The cell phone vibrates when a text message is sent to the phone. 5. The cell
asked by rfvv on October 18, 2017 
Math
According to CTIAThe Wireless Association, the mean monthly cell phone bill in 2004 was $50.64. A market researcher believes that the mean monthly cell phone bill is different today, but is not sure whether bills have declined because of technological
asked by Kris on November 29, 2010 
Math
It takes a company 4 hours to build 1,300 cell phones. If the company continues working at the same rate, how many hours will it take them to build 30,000 cell phones?
asked by Amy on November 17, 2015 
math
A market research company surveyed 2500 teenage cell phone owners. The company learned that 4/5 of them use cell phone data services. How many teenagers surveyed use cell phone data services?
asked by john on June 25, 2013 
statistics
Given the following situation, how would you use Megastat to test whether the population defective rate is greater than 10%? Please outline the process for the test and, if necessary, including the output from Megastat to explain your approach. What
asked by Jenny on January 29, 2010 
stats
A manufacturing process has 100 customer orders to fill. Each order requires one component part that is purchased from a supplier. However, typically, 2% of the components are identified as defective, and the components can be assumed to be independent. a.
asked by Anonymous on October 9, 2012 
math
suppose that the Aztec cell phone company charges $50 per month plus 15 cents per minute while the southern cell phone company charges no monthly fee but 25 cents per minute after how many minutes of phone usage would a monthly phone bill be the same from
asked by jordi on September 24, 2018 
computer studies
the use of cell phones impove productivity? How people van use cell phones to keep themselves safe? The impact of cell phones on crime? The impact on social an ethical behaviour on the enviroment?
asked by liesa janse van rensburg on October 2, 2007 
Microeconomics
For this part of the assignment, we will focus on the demand curve. Draw the demand curve for the APhone. Explain how the graph, price, and quantity demanded will change if the following occurs: • There is an overall increase in income. • It is
asked by sharon on October 14, 2012 
ALGEBRA HELP OR I AM GONNA FAIL I CANT DO THIS
compare two cell phone companies offers to see which is the better deal. Horizon Cell Phone Company Vertigo Cell Phone Company Base rate=$40 Plus every minute costs $0.05 vertigo company Base rate=$30 Plus every minute costs $0.07 Step 1: Write a linear
asked by WORRIED on November 18, 2012 
stastics
A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at random at an auto inspection station. a. If the inspector checks 10 drivers, what is the probability that at least one driver never
asked by level crawford on May 3, 2011 
statistic
A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at random at an auto inspection station. a. If the inspector checks 10 drivers, what is the probability that at least one driver never
asked by sasha on January 5, 2013 
Math
I don't get it a box of 6 cell phones costs $124.54. What is the cost of one cell phone?
asked by saiyda on December 2, 2009 
Math
A box of 6 cell phones costs $124.54. what is the cost of one cell phone.
asked by saiyda on December 2, 2009 
Algebra 2
Problem Solving  A manufacturer of cell phones makes a profit of $25 on a deluxe model and $30 on a standard model. The company wishes to produce at least 80 deluxe models and at least 100 standard models per day. To maintain high quality, the daily
asked by LeLe on December 13, 2009 
science
Can a cellphone place near a pacemaker patient heart change the pacemaker patient heart rate and how? Can I use my cell phone if I have a pacemaker? The types of cell phones used in the United States are less than 3 watts and do not seem to affect
asked by nikki on December 27, 2006 
Statistics/Probability
In the production of a particular model of cell phones, it is found that 5% are defective. Cellular phones are selected at random and put into boxes of 10. If a box is selected at random, find the probability that it contains. (i) Exactly three defective
asked by Koylar on July 17, 2014 
chem 115
1) here has been a great deal of controversy over whether cell phones cause brain cancer due to the emission of high energy waves near the head. The data on this is still being discussed (see NY Times article if you want more information) but we can do a
asked by Kelsey on September 23, 2010 
english
can someone help me to proofread my argument paragraph and to see whether this is a good argument paragraph or not? if not, please tell me what i need to do for the improvement. thanks The article, ¡§Why Cell Phone Use While Driving Should Be Banned¡¨
asked by jessie on February 18, 2008 
math
Loyola heights has 3000 phones of which 3/5 are dial phones. If 2/3 of these dial phones are replaced by digital phones and 400 additional phones are installed, what fraction of the phones are digital now?
asked by iselle on November 10, 2016 
Price Discrimination
Why does phone company offer different pricing structures for business and personal phone lines? I don't know for sure, but it is probably because business phones are making a profit (they hope) via phone usage. I hope this helps. Thanks for asking.
asked by Vivian on March 24, 2007 
business
Im post this question again. Please, let there be some response You are employed in the marketing department of The Mobile Phone Network, a retail chain selling mobile phones. The company wants to find out more about its customers. Specifically, the
asked by VICTOR on February 16, 2009 
Statistics
Professor does not teach from a book so am not sure how to apply this problem to the regression equation. Thanks in advance. Problem below. Cell Phone Mins= 3.5*cost + 25 where cell phone mins measure the number of minutes per month and cost is the dollar
asked by SROBSON on April 17, 2011 
Math
1. t + 27 = 21 t = –6 t = 47 t = 6 t = –47 2. 24 = m – 32 m = –8 m = 56 m = 768 m = –56 3. Tamara has eaten 1,400 calories for breakfast and lunch. She has 800 more calories, c, that she can eat for dinner. Write and solve an equation to find
asked by Anonymous on October 2, 2014 
Math4 practice questions?
1. t + 27 = 21 t = –6 t = 47 t = 6 t = –47 2. 24 = m – 32 m = –8 m = 56 m = 768 m = –56 3. Tamara has eaten 1,400 calories for breakfast and lunch. She has 800 more calories, c, that she can eat for dinner. Write and solve an equation to find
asked by anonymous on October 2, 2014 
Statistics
I have a take home test I am working on. Any help would be appreciated. Professor does not teach from a book so am not sure how to apply this problem to the regression equation. Thanks in advance. Problem below. Cell Phone Mins= 3.5*cost + 25 where cell
asked by SROBSON on April 17, 2011 
cell phone
Cell Phone Cell phones let you make or take calls wherever you happen to be. A third of the world’s population now makes their phone calls this way, and around 3 billion cell phones are in use worldwide. Screen: has a 176 x 220 pixel display that can
asked by cell phone on February 9, 2011 
URGENT ECON QUESTION ABOUT DEMAND AND SUPPLY
ok this is the scenario 12. Industry: cell phones Event: 1.) cell phones are reported to cause brain tumors 2.) the cost of cell phone electronic chips are cheaper so in this scenario, demand decreases and the supply increases....thus demand shifts to the
asked by tofu on March 22, 2007 
Algebra
Another question: A cell phone company charges $60 for a cell phone and $40 per month under its economy plan. Formulate and graph a model that can be used to determine the total cost, C(t), of operating a cell phone for t months. Find the total cost for 5
asked by Celina on December 16, 2008 
Calculus
1) A telephone company has 10,000 phones in a certain city where the basic rate is $4 per month. The officials have evidence that if the charge is reduced the number of phones will increase at an estimated rate of 1,000 phones for each 25 cent reduction.
asked by Omar on March 21, 2016 
English
1. A cell phone is a useful device. 2. The cell phone is a useful device. 3. Cell phones are useful devices.  Are they all in generic use? Is #2 in generic use here?
asked by rfvv on October 18, 2017 
statistics
Your mailorder company advertises that it ships 95% of its orders within three working days. You select an SRS of 100 of the 5000 orders received in the past week for an audit. The audit reveals that only 91 of these orders were shipped on time. A) What
asked by Dylan on April 24, 2013 
Math
A cell phone company charges a monthly fee of $17.95 and $0.03 per minute Write an equation that represents the cost (c) for using the cell phone for minutes (m) Use your equation from part a to find the cost for using the phone for 150 minutes
asked by Gina on April 28, 2014 
math
Rafi is upgrading his cell phone and monthly service plan.Triax Cell offers a new phone for $50 and unlimited service for a monthly fee of $40.CellUR offers a new phone and unlimited service for a monthly fee of $50. After how many months will the cost of
asked by Priyanka on February 18, 2015 
Math
Rafi is upgrading his cell phone and monthly service plan. Triax Cell offers a new phone for $50 and unlimited service for a monthly fee of $40. CellUR offers a new phone and unlimited service for a monthly fee of $50. After how many months will the cost
asked by darthv on February 22, 2015 
science
My cell phone has an antenna about 10.00cm long. If this is one quarter of the wavelength of the radiation, at what frequency in Megahertz does it operate? Note that cell phones, like radio, transmit sounds via electromagnetic waves which travel at the
asked by Frank on February 27, 2012 
any grammatical errors with this sentence?
The use of cell phones would not be as pervasive if it was indeed not remarkable. Thank you for using the Jiskha Homework Help Forum. This sentence is not clear to me. Are you saying that the use is remarkable or that phones are remarkable? At any rate, in
asked by jenny on March 26, 2007 
English
I have more than three smart phones. This smart phone service has been opened. However the other smart phones services have not been opened. They are juse secondhand smart phones. With the phones, I can take photos and make videos a lot. ==============
asked by rfvv on March 2, 2016 
economics 7
An electronics company advertises that the battery life of its new smart phone with normal usage averages 72 hours. The company says this is one of the desirable characteristics of the phone which makes the phone a better choice compared to competitor
asked by Mia on September 7, 2014 
economics
An electronics company advertises that the battery life of its new smart phone with normal usage averages 72 hours. The company says this is one of the desirable characteristics of the phone which makes the phone a better choice compared to competitor
asked by miguel on September 8, 2014 
economics (7)
An electronics company advertises that the battery life of its new smart phone with normal usage averages 72 hours. The company says this is one of the desirable characteristics of the phone which makes the phone a better choice compared to competitor
asked by miguel on September 8, 2014 
math
It has been determined that 30% of students at a certain high school own a cell phone. If 95 students are randomly selected determine the probability that exactly 20 students own a cell phone. *if using a calculator show syntax used*
asked by corey on May 23, 2011 
Statistics
A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported
asked by Tamcia on February 21, 2015 
English Expression
Have you got your health checked? We have to go the hospital to get your medical certificate. After the 5th period, let's go out. He doesn't seem to have classes after 5th period(class). As I don't have classes as well, we can go out to do several things.
asked by John on April 17, 2008 
Algebra
The cost of producing cell phones is represented as C=mx+b, where m is the marginal cost, x is the number of phones produced, b is the fixed cost, and C is the final cost. a. If the fixed cost is $75 and the marginal cost is $8, write the cost equation. b.
asked by KevinJ on February 12, 2014 
Algebra
The cost of producing cell phones is represented as C=mx+b, where m is the marginal cost, x is the number of phones produced, b is the fixed cost, and C is the final cost. a. If the fixed cost is $75 and the marginal cost is $8, write the cost equation. b.
asked by Willy on February 10, 2014 
Algebra
The cost of producing cell phones is represented as C=mx+b, where m is the marginal cost, x is the number of phones produced, b is the fixed cost, and C is the final cost. a. If the fixed cost is $75 and the marginal cost is $8, write the cost equation. b.
asked by KevinJ on February 17, 2014 
Algebra ASAP
I a working wth a cell phone performance task project. I have to determine which three cell phones are the best for a first time user and develop an equation for each of them. WalMart has a plan for $30.00 a month with .29 per minute. It includes a $70.00
asked by Thomas M on March 9, 2015 
math
A box contain 12 cell phones of which 4 are defective.all phones look alike.3 phones are drawn randomly what is the probability.1 all the 3 bulbs are defective.2 at least 2 of the bulbs chosen are defective.3 at most 2 of the bulbs chosen are
asked by gift onos on September 23, 2012