A culture starts at 8600 bacteria. After one hour the count is 10,000. Find a function that models the number of bacteria n(t) after t hours. The answer is n(t) = 8600e^.1506t Where does this 0.1506 come from?
237,516 results, page 32

Visual Basic (Computer Programming)
ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week. Deskcheck your ... 
science
A 27 kg gun is standing on a frictionless sur face. The gun fires a 56 g bullet with a muzzle velocity of 314 m/s. The positive direction is that of the bullet. Calculate the momentum of the bullet im mediately after the gun was fired. Answer in units of kg · m/s Calculate ... 
science
A 27 kg gun is standing on a frictionless sur face. The gun fires a 56 g bullet with a muzzle velocity of 314 m/s. The positive direction is that of the bullet. Calculate the momentum of the bullet im mediately after the gun was fired. Answer in units of kg · m/s Calculate ... 
science
A 27 kg gun is standing on a frictionless sur face. The gun fires a 56 g bullet with a muzzle velocity of 314 m/s. The positive direction is that of the bullet. Calculate the momentum of the bullet im mediately after the gun was fired. Answer in units of kg · m/s Calculate ... 
algebra
A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln for various times (in minutes) is shown in the following table. Time, min Temperature, °F 15 ... 
physics
An electron is accelerated by a constant electric field of magnitude 325 N/C. (a) Find the acceleration of the electron. (m/s^2) (b) Use the equations of motion with constant acceleration to find the electron's speed after 1.05 108 s, assuming it starts from rest. (m/s) 
math
you complain that the hot tub in your hotel suite is not enough. the hotel tells you that they will increase the temperature by 10% each hour. If the temperature of the hot tub is 75%F, what will be the temperature of the hot tub after 3 hours, to the nearest tenth of a degree? 
Finance
Currently, there are 560,000 shares outstanding at $85 each. There will be 65,000 new shares offered at $84 each. Calculate each of the following: • The new market value of the company. • 560,000($85) + 65,000($60) • 47,600,000 + 3,900,000 • = $51,500,000 • The ... 
Word Problem Maximizing A Bonus
Pauline Wong spends 4 hours selling a used car and 6 hours selling a new car. She works no more than 40 hours per week. In order to receive a bonus, she must sell at least one used car and four new cars each week. In that case, she recives a bonus of $180.00 for each used car ... 
math
A giant tortoise can live 175 years in captivity. The gastrotrich, which is a small aquatic animal, has a life span of only 3 days (72 hours). If a gastrotrich died after 36 hours, a giant tortoise that lived 87.5 years would live proportionally the same because they both ... 
Ms.Sue or Steve can u please help me?!?!!?
Ok these are some textbook questions i need to turn in soon could you please check and see if they are correct~ 1. x over 4 + 1 = –5 (1 point) –2 16 4 –24 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 3. Combine like terms: –21a + 16a (1 point) –5a 5a 37a –37a ... 
Math
I seem to be having problems setting up Linear Programming questions. For example: Kustom Kars does van conversions. The Custom conversion required 15 hours of shop time, 8 hours of painting time, and 1 hour of inspection time. The Deluxe conversion requires 12 hours of ... 
Algebra 2
1. Determine whether the relation is a function. A: ? 2. A commuter has $75. Each day's commute costs $3.50. Write a function to represent the total amount the commuter has remaining after d days. What is the value of the function for an input of 5, and what does it represent... 
math college readiness
A ball is thrown from a height of 105 feet with an initial downward velocity of 9/fts . The ball's height h (in feet) after t seconds is given by the following. =h−105−9t16t2 How long after the ball is thrown does it hit the ground? Round your answer(s) to the ... 
Algebra
1. Evaluate. (8 – 3) (12 ÷ 2 • 2) – 20 Answer: I'm not sure if its 5 or 40 2. 6x – 7 = 5(x – 2) Answer: 3 3. Solve for y. 3x – 2y = 12 Answer: 3x12/2 4. Solve. –3(x – 3) + 8(x – 3) = x – 9 Answer: 1 1/2 or 1.5 5. Find the slope of the line passing ... 
Physics
A butterfly is flying with velocity jˆ i 12 ˆ 10 + m/s and wind is blowing along x axis with velocity u. If butterfly starts motion from A and after some time reaches point B, find the value of u. 
Science
A train starts from rest and attains a speed of 15 m/s in 10 seconds and produce acceleration of 2.5 m/s (square) it stops in 6 seconds after the breaks apply find the distance covered by train 
linear equations
Rachel has two crayons. The fat crayon burns down to nothing after 15 hours. Her skinny crayons wear down to nothing ofter 6 hours. At 10:30 she began coloring with both crayons of the same height, one fat one skinny. At what time will the skinny crayon be half the height of ... 
linear equations
Rachel has two crayons. The fat crayon burns down to nothing after 15 hours. Her skinny crayons wear down to nothing ofter 6 hours. At 10:30 she began coloring with both crayons of the same height, one fat one skinny. At what time will the skinny crayon be half the height of ... 
Math
If 3000 dollars is invested in a bank account at an interest rate of 6 per cent per year, find the amount in the bank after 12 years if interest is compounded annually Find the amount in the bank after 12 years if interest is compounded quaterly Find the amount in the bank ... 
Math, calculus, advanced functions, pre calculus
An investments value, V(t) is modelled by the function V(t)=2500(1.15)^2, where t is the number of years after funds are invested A) find the instantaneous rate of change in the value of the investment at t=4, what intervals would you choose? Why? My question is ... Which ... 
Math grade 12
the function f(x)= o.005t^2+0.8t+12 models the relationship between a certain vehicle’s speed and fuel economy, where is the fuel economy in kilometres per litre and x is the speed of the vehicle in kilometres per hour. Determine the rate of change in fuel economy for 10 km... 
Help w/this one again(Math!!)
Write one or two equations to represent the situation below. Solve the equation(s). Show all your work. Two cars leave town going in opposite directions. The car heading north travels at 55 mph. The car heading south travels at 75 mph. How long will it take them to get 715 ... 
math help me out
at the beginning of the year, the owner of a jewel shop raised the prices of all the jewel in his shop by x% and lowered then by x%. The price of one jewel after this up and down cycle reduced by rs 100. the owner carried out the same procedure after a month. after this second... 
math 117
Living in or near a metropolitan area has some advantages. Entertainment opportunities are almost endless in a major city. Events occur almost every night, from sporting events to the symphony. Tickets to these events are not available long and can often be modeled by ... 
math
Here is the information for two payasyougo cell phone companies, On Call 3.5 hours: $10 Talk Time 1/2 hour: $1.25 1)What is the unit rate in dollars per hour for each company? 2)Which company offers the best deal? Explain your answer. 3)Another company offers a rate of $0... 
calculus please help
the actual problem is integral(2 to +infinity) (1/x^2) dx and after integrating and plugging in the bounds, i got 1/(infinity sign)+ 1/2 does that converge to 1/2, Ln2, 1, 2 or is the answer nonexistent? what i was thinking that everytime the bottom number increases seeing ... 
Economics
Here is Mrs. Baker's revenue and expenses for 2014: Revenue from sale of bread = $65,000 Cost of materials (such as sugar, yeast, baking soda, etc.) = $15,000 Wages paid = $20,000 Rent paid = $10,000 Mrs. Baker's contribution to the 2014 GDP was what? I'm confused because I'm ... 
please check my answer
please check my answer thanks :) You are the manager of The Candle Shop using the FIFO method of inventory pricing, what is the dollar value of the ending inventory if there were 17,000 units on hand Dec 31 Show all of your work Jan 1 5,000 @ $0.89 Feb15 10,000 @ $0.69 April ... 
college physics (inertia)
As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ... 
college physics (inertia)
As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ... 
college physics (inertia)
As a result of friction, the angular speed of a wheel changes with time according to dθ/dt = ω0 *e^(σ*t) where ω0 and σ are constants. The angular speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s. a)Determine the ... 
6th grade math
If Jack takes 6 hours to wash 4 cars then at that rate how man cars could be washed in 42 hours? we got answer of 28 cars but then how do you determine the rate the cars were being washed? the teacher gave answer of 2/3 cars per hour but we don't understand how she got that. 
math111(3)
The function f(x)=(x+6)^2 is not onetoone. Choose the largest possible domain containing the number 0 so that f(x) restricted to this domain is onetoone. The largest possible domain is [6,infinity) If the restriction function is written F, then inverse function F^{1}(y)=... 
Biology
There are many drugs that aid our lives on a daily basis that are made/mass produced due to the assistance of bacteria. Can you give a few examples of such drugs and perhaps tell the class a little about the process? 
Advanced Biology
I need help finding the terms of each definition. 1.) The "transforming factor" that alters pneumonia bacteria 2.) The three parts of every nucleotide 3.)A pair of these forms a "rung"in the DNA 4.) Used to "label" DNA and protein in experiments 
math check
1 four buttons have diameters of 5/8 , 3/4, 9/16, and 7/8 which buttons is smallest? answer 9/16 2. I spent 1/3 of my time doing math homework and 2/7 preparing for a history test . what fraction of study time remain? answer: 13/21 3. least common multiple of 3, 6, 9 answer 18... 
Math
If you triple a number you will have one half the number of hours in two days. What is the number? 
Maths Please Help
Alex and Bella play the following game. They first choose a positive integer N, and take turns writing numbers on a blackboard. Alex starts first, and writes the number 1. After that, if the number k is on the board, the next player may write down either k+1 or 2k, if the new ... 
Math
A new car typically loses 20% of its initial value during the first year. During the second year, the car loses 15% of its value after the first year. Find the value of the car($18,000) after the first year and after the second year. 
Finance
Newdex has net income of $2,500,000 and 1,000,000 shares outstanding. It needs to raise $3,610,000 in funds for a new asset. Its investment banker plans to sell an issue of common stock to the public for $40 per share, less a spread of 5%. How much must Newdex's aftertax ... 
PreCalculus
Driving down Bald Mountain in Wyoming, Bob dean finds that he descends 1600 feet in elevation by the time he is 2.5 miles (horizontally) away from the high point on the mountain road. Find the slope of his descent (Hint: 1 mile = 5280 feet) After converting the miles to feet I... 
algebra
A new machine that deposits cement for a road requires 13 hours to complete a onehalf mile section of road. An older machine requires 15 hours to pave the same amount of road. After depositing cement for 2 hours, the new machine develops a mechanical problem and quits working... 
math
A new machine that deposits cement for a road requires 13 hours to complete a onehalf mile section of road. An older machine requires 15 hours to pave the same amount of road. After depositing cement for 2 hours, the new machine develops a mechanical problem and quits working... 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard ... 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard ... 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard ... 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard ... 
math
Kendra deposited a total of $9,000 between two saving accounts bearing simple interest. One of the accounts has an interest rate of 3% while the other rate is 4%. If the total interest earned after one year is $320, find the amount deposited into each of the accounts 
science
suppose you have 100grams of radioactive plutonium239 with a halflife of 24,000 years. how many grams of plutonium239 will remain after: A)12,000 years B)24,000 years C)96,000 years how do i do this?????? 
Math
A manufacturer makes two products A and B, each of which is processed in two departments, production and finishing. Each A takes 3 hours to produce and six hours to finish, whereas each B takes 5 hours to produce and 2 hours to finish. How many units of A and B can be produced... 
Algebra
There were 39,000 desktop publishing jobs in the United States in 2000. It has been projected that there will be 64,000 desktop publishing jobs in 2010. (a) Using the BLS data, find the number of desktop publishing jobs as a linear function of the year. N(t)=_____ 
Algebra
2 hour 40 min after a raft left pier A and traveled downstream, a motorboat left pier B and traveled upstream toward the raft. The two met 27 km away from B. Find the speed of the raft if the speed of the motorboat in still water is 12 km/hour and the distance from A to B is ... 
Math
The graph of a rational function has a local maxima at (1,0) and (8,0). The complex number 2+3i is a zero of the function. What is the least possible degree of the function? I know The correct answer is 6. I need help with the explanation please. 
Science
West Fremont is a community of 3,000 homes. A coal burning power plant supplies electricity for the town. The capacity of the plant is 12 megawatts, and the average household consumes 8,000 kilowatt hours a year. Assuming that the power plant can operate at full capacity for 8... 
Math
Two Planes leave an airport at the same time, one flying 300km/h and the other at 420km/h The angle between their flight paths is 75 degrees after three hours, how fart apart are they? 
Pharmacology
dose is 10mg/kg IV for a 100kg patient. level drawn at level 30 minutes after the dose. The serum level of this antibiotic returns at 83.3mg/L. What is the volume of distribution of the drug? The goal therapeutic serum level of a is 120 mg/L. How much more drug do you need ... 
physics
Some bacteria are propelled by biological motors that spin hairlike flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.70e8 m, and a tangential speed at the rim of 2.32 e5 m/s. a) What is the angular speed (the magnitude of the ... 
Physics
Some bacteria are propelled by motors that spin hairlike flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x108m, and a tangential speed at the rim of 2.5x105 m/s. (a) What is the angular speed (the magnitude of the angular ... 
math
two airplanes left the same airport traveling in opposite direction. if one airplane averages 400 miles per hour and the other airplane averages 250 miles per hour, in how many hours will the distance between the two planes be 1625 miles? Does it help to point out that if they... 
Math
Ms Lin has 6 hrs to finish a 400 page book. She has already read 150 pages. She read 40 pages in the first hour. What is the approximate number of pages she must read per hour to finish the book. if she read 40 pages in 1 hour. She was able to read 1.5 pages a minute x 150 ... 
English
One of these sentences contains an error in Adjectives and Adverbs. A.The dress rehearsal went badly, but the director remained calm. B.The doctor felt carefully along the spine of the victim, who lay quietly on the ground. C.For several hours after the polls closed, the ... 
net
An owner lists her home at a 7% commission rate and wants to net $45,000 after paying the mortgage balnce of $68,000 and the broker's commission. To the nearest dollar, what should the selling price be to net her $45,000? 
Math
How can I convert mm to cm and cm to mm Look at the metric system, a part of which is shown below. The prefixes are kilo hecto deka unitgrams, liters, meters, etc. deci centi milli Stearting anywhere on the scale of prefixes above, count the number of places to get from ... 
science
A halflife of mercury195 is 31 hours. If you start with a sample of 5.00g of pure mercury195, how much of it will still be present after 93 hours? 
calculus
For time, t, in hours, 0\le t\le1, a bug is crawling at a velocity, v, in meters/hour given by v = \frac{5}{1 + t}. Use \Delta t = 0.2 to estimate the distance that the bug crawls during this hour. Find an overestimate and an underestimate. Then average the two to get a new ... 
Math
Label each statement TRUE or FALSE. a. The sum of two onetoone functions is onetoone. b. The product of two onetoone functions is onetoone. c. If f is a onetoone function and k is a real number (constant), then the function g(x)=k*f(x)is onetoone. So I was thinking... 
math
summation of indexed data Could someone please help me I am very confused on this problem.Thank you I have added all the number up and get 31. than it says to find 31 it have the sum with 15 over i=I than after that behind the sum is xi. What do i do to find the number do I... 
math models
Martin invested $6,500 in a bank at a simple interest rate of 6.5%. How much interest would he receive after 4 years? Use I=PRT 
math
Peter is interested in designing an experiment to test the probability of tossing a certain number on a fair cube. He will toss one cube 10 times in a row and count how many times the cube lands on the number 4. What is one aspect of this experiment he can change to make the ... 
reading
Please help Claim lead in drinking water with harm humans Which of the following is support this claim a. After use water that contain high level of lead, people note that their toothbrush turned yellow b. After use water that contain high level of lead, people report a ... 
Algebra
The CarryItAll minivan, a popular vehicle among soccer moms, obeys the demand equation ppequals=negative StartFraction 1 Over 40 EndFraction x plus 19 comma 000−140x+19,000. The cost of producing xx vans is given by the function Upper C left parenthesis x ... 
College Physics
Some bacteria are propelled by motors that spin hairlike flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.1x108m, and a tangential speed at the rim of 2.0x105 m/s. (a) What is the angular speed (the magnitude of the angular ... 
math
If a tree is 10 feet tall after two years and 25 feet tall after 5 years, find the rate of change of growth of the tree if y is the height in feet and x is the number of years. Be sure to give correct units. 
Physics
Two cars crash into each other at an intersection on a very icy road. One 3,000 lb car is traveling 45 mph NW. The other, weighing 2,000 lb, is traveling 30 mph E. After the collision, their bumpers lock together. What is the velocity of the wreck as it slides off the road ? 
Physics
Two cars crash into each other at an intersection on a very icy road. One 3,000 lb car is traveling 45 mph NW. The other, weighing 2,000 lb, is traveling 30 mph E. After the collision, their bumpers lock together. What is the velocity of the wreck as it slides off the road ? 
math 2
The time needed to paint a wall varies directly with the area and inversely with the number of painters.If it takes 5 people 2 hours to paint 100 square meters,how much area could 6 people paint in one hour. 
physics
A 2,000kg car moving east at 10.0 m/s collides with a 3,000kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 39.0° north of east and at a speed of 5.15 m/s. Find the speed of the 3,000kg car before the collision. 
Corporation Finance
If you put up $28,000 today in exchange for an 8.25%, 15year annuity, what will the annual cash flow be? The answer I came up with was $30,310, does anyone know a formula or the steps to find the answer, I just trying using the pmt function in excel. 
Math
Jina is driving to Boston. Suppose that the remaining distance to drive (in miles) is a linear function of her driving time (in minutes). When graphed, the function gives a line with a slope of −0.95 Jina has 44 miles remaining after 34 minutes of driving. How many miles... 
Calculus
Part I The change in annual revenue in thousands of dollars for the Ozark Zip Line Corporation has been modeled by the function. R(x) = 8.2x^2 + 23.1x where x is the number of years after 2000. To find the total revenue gained between the years 2002 and 2005, start by choosing... 
Calculus
Part I The change in annual revenue in thousands of dollars for the Ozark Zip Line Corporation has been modeled by the function. R(x) = 8.2x^2 + 23.1x where x is the number of years after 2000. To find the total revenue gained between the years 2002 and 2005, start by choosing... 
Calculus
Part I The change in annual revenue in thousands of dollars for the Ozark Zip Line Corporation has been modeled by the function. R(x) = 8.2x^2 + 23.1x where x is the number of years after 2000. To find the total revenue gained between the years 2002 and 2005, start by choosing... 
Math/algebra class
You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class in Berks Hall? 1) Estimate whether it will ... 
Chemistry
indium115 has a half life of 4.5 hours, if you start with a 12.0mg sample of indium115, how much will remain after 13.5 hours 
Math
Write a number sentence. Marshall sleeps 8 hours each day. How manu hours does Marshall sleep in one week? How many hours is Marshall awake each day? 
math
A person standing on the roof of a building throws a ball directly upward. The ball misses the rooftop on its way down and eventually strikes the ground. The function s(t) = −16t2 + 64t + 80 describes the ball’s height above the ground, s(t) , in feet, t , seconds ... 
elementary statistics
The number of calls received by a car towing service averages 21.6 per day (per 24hour period). Find the probability that in a randomly selected hour the number of calls is fewer than 4. What requirement for the Poisson distribution is probably not valid in the scenario ... 
Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ... 
Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ... 
Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ... 
math
Find the pay P Ken receives for a 49hour week if the pay x he receives for 40 hours is $180 and the pay y for each additional hour is $6.75. Use P = x + 9y. 
Calculus
The number of people who donated to a certain organization between 1975 and 1992 can be modeled by the equation D(t)=10.61t^(3)+208.808t^(2)168.202t+9775.234 donors, where t is the number of years after 1975. Find the inflection point(s) from t=0 through t=17 , if any exist... 
mathamatics
on december31, 1995, paul invested $2000 in a stock. his stocker gains 20% ever odd month (jan, march, may..) and loses 15% every even month (feb, april, june...) it says write a piecewise defined function for the value of the stocker n months after the original investment, n ... 
Math
Can someone help me do an example like this one. State the application, give the equation of the quadratic function, and state what the x and y in the application represent. Choose at least two values of x to input into your function and find the corresponding y for each. ... 
math
A certain antibioyic reducesthe number of bacteria in your body by 10% each dose a) if four doses of the antibiotic are taken, what percent of the original bacterial population is left. b) biologists have determined that when a person has a bacterial infection, if the ... 
math
The Thompson Company uses standard costing and has established the following direct material and direct labor standards for each unit of Lept. Direct materials: 2 gallons at $4 per gallon Direct labor: 0.5 hours at $8 per hour During September, the company made 6,000 Lepts and... 
Math
Two boats leave the same place at the same time. The first sails in a straight line N70°W at 45 miles per hour and the second goes in a straight line S23°E at 57 miles per hour. After 1 hour, how far apart are the boats, to the nearest tenth of a mile? 
physical
A car starts from rest its acceleration is 2m.s2 in a straight line. What is it displacement after 10 seconds? 
PHYSIC
A CHEETAH CAN ACCELERATE AT A RATE OF 8.0 M/S^2. ASSUMING IT STARTS FROM REST, WHAT WILL ITS VELOCITY BY AFTER 3.5 SECONDS?