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 88

1. accounting

2. Illustrate effects on the accounts and financial statements of each of the following transactions. For a company using a job order cost system: (a) Materials purchased on account \$176,000 (b) Materials requisitioned: For production orders \$161,500 For general factory use \$8...
2. algebra & trigonometry

The profit of an organization is calculated by the function P(x) = x2 – 4000x + 7800000, where x is the number of units sold. If the net profit is 3800000, find the number of items sold. Thanks
3. Chemistry

A 10.0-mL solution of 0.300 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after the following additions of the HCl solution: a) 0.00 mL b) 10.0 mL c) 20.0 mL c) 30.0 mL d) 40.0 mL **I know how to solve the problem but I keep getting answers that are exactly ...
4. Math

1.Suppose that the function f(x) = 5x + 3 represents the number of cars that drive by in x minutes. How many cars will drive by in 10 minutes? a. 80 b. 53 c. 50 d. 35 2. Buses on your route runs every 8 minutes from 7:00am to 11:00am. You arrive at the bus stop at 8:19am. How ...
5. Math

What number is 1,000,000 greater than 337,676
6. accounting

40. The following items are taken from the financial statements of Pelatihan OSN Company for the year ending December 31, 2016: Accounts payable 18,000 Accounts receivable 11,000 Accumulated depreciation – equipment 28,000 Advertising expense 21,000 Cash 15,000 Pelatihan OSN...
7. Math

You survey 1000 new home buyers and find that the mean price was \$185,000 and the standard deviation was \$20,000. How many paid more than \$210,000?
8. Math

The sum of one-third a number, one-sixth of the number, and one-ninth of the number is twenty two. Can someone help?
9. English

1. He has three hours soccer practice every day. 2. He has three hours' soccer practice every day. 3. He has three-hour soccer practice every day. (Which one is grammatical?)
10. math

a home purchased for \$300,000 depreciatd 8% over a 1-year period. what was the value of gthe home after the end of the year?
11. Math

I need to have 20,000 in the bank after 1 year can you tell me what my initial deposit must be if I have a intrest rate of 4% a year.
12. arithmetic sequences

a new car cost \$13,000 and is depreciating by \$900 each year. how much will the car cost be worth after 4 years?
13. Math

A deposit of \$10,000 is made in a trust fund that pays 4.9% interest, compounded monthly. What is the balance of the trust fund after 15 years?
14. math

Glenn bought a car for \$ 600,000.The yearly depreciation of his car is 10% of its value at the start of the year.What is its value after 4 years?
15. Geography

Local cultures are sustained through customs. A custom is a practice that a group of people routinely follows. People have customs regarding all parts of their lives from eating and drinking to dancing and sports. To sustain a local culture the people must retain their customs...
16. math

the chippa soccer association calculates its profit from gate taking match according to this formular p=5n-55 Where p is profit in rand an n is the number of people in the stadium a.calculate the profit when the number of people in the stadium is 250 b.if n=10,find p.explain ...
17. maths

i have to do a survey regarding number of hours a child spends in watching t.v or playing and to find their mean mode median

Approximately 4 out of every 10 students at Sonia's college live on campus. The college has 3,000 students. 1. How many of them live on campus? A 1,200 students 2. Write the proportion 21 is to 33 as 63 is to 99. A. 21/33 =63/99 3. is this fraction proportional? 3/11=7/19 A. ...
19. physics

A 3 kg object traveling 6m/s east has a perfectly elastic collilsion with a 4kg object traveling 8 m/s west After the sollision, the 3 kg object will travel 10 m/s west a. What was the total momentum before the collision? b. What is the total momentum of these objects after ...
20. Compisiton of Functions

Let f(x) = x + 4 and h(x) = 4x - 1 Find a function "g" such that "g compose of f equals to h" g(f(x) = h g(f) = h g(x + 4) = 4x - 1 g = (4x - 1) / (x + 4) But my answer is wrong, how do I retrieve the right answer? By the way, the right answer is "g(x) = 4x - 17"
21. Geology

I need to find some kind of song written after 1990 about geology. It have to do with any part of geology but it just had to be written after 1990. any suggestions about where i might be able to find something like this? -thanks- http://www.naturescience.org/RollingRock.html
22. MATH

Sally is evaluating some test papers. There are 80 multiple choice questions in the test. Students get two points for every correct answer and for every wrong answer or any question left blank, one point is deducted from the total score. Mick got 115 points on the test. If x ...
23. Chemistry

How do you calculate the amount of a radioactive substance remaining after an integral number of half-lifes have passed?
24. math

P=347e^.023t, where t is the number of years after 1990. Use the model to estimate the population in the year 2012.
25. math

P=347e^.023t, where t is the number of years after 1990. According to the model, in what year will the population reach 1000?
26. math

can you please help. If a plane travels 550 kilometers per hour, represent the distance it will travel in h hours. thank you
27. algebra

Abigail roller skates with a constant speed of 8 miles per hour. How far can she travel in 1 1/2 hours?
28. Math

Miguel walks 3/4 mile around the high school track in 1/2 hour.how far can he walk in 2 hours?
29. Math

If you work 7 days a week 8 hours a day and gets paid \$10.50 an hour how much will your weekly salary be?
30. math

Sam charges a \$5 travel fee and then \$3.25 per hour for labor. How many hours will he need to work to make \$18?
31. Math

The radius, r, in centimeters, of a melting snowball is given by r=55−1.5t, where t is the time in hours. The V=4/3πr^3 cm^3. Find a formula for V=f(t), the volume of the snowball as a function of time.
32. Math ~CHECK MY WORK PLEASE~

Briana is allowed to watch no more than 5 hours of T.V a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of T.V Briana can still watch this week. MY ANSWER: T<5 T - 1.5 < 5 - 1.5 T = 3.5
33. Finance

Sydney saved 50 000 during her first year of work after college and plans to invest it for her retirement in 40 years how much will she have available for retirement of she can make 8 percent on her investment

Donna opens a certificate of deposit (CD) with \$2,000. The bank offers a 3% interest rate. If the account compounds quarterly, which of the following equations represents the future value of the account, after 1 year?
35. algebra homework

Kim starts to walk 3 mi to school at 7:30 A.M. with a temperature of 0°F. Her brother Bryan starts at 7:50 A.M. on his bicycle, traveling 10 mph faster than Kim. If they get to school at the same time, then how fast is each one traveling? I have tried to answer this word ...
36. Math

Delia works from 8:00 a.m. to 4:30 p.m. and has one hour each day for lunch. How much does she earn for a five-day workweek at \$4.80 per hour?
37. Half-life

After two hours, 1/16 of the initial amount of a radioactive isotope remains undecayed. What is the half-life of the isotope?
38. Math

two people walk away from each other at an angle, one moving straight ahead at 6 ft per second, the other moving straight ahead at 4 ft per second. after 5 seconds, they are 24 ft apart. if they continue at the same angle and space, how far apart will they be after 1 minute?
39. algebra word problem

use c = 35h + p to find the cost (c) of having a car tuned up if the charges are \$35 per hour(h) for labor plus the cost of parts (p). The mechanic estimates it will require 2 hours of labor and \$75 for parts a) \$220 b) \$110 c) \$145 d) \$35
40. trig

Find the bearing and airspeed for a plane to fly 630 miles due north in 3 hours if the wind is blowing from a direction of 318* and is blowing at 15mph. Approximate the bearing to the nearest degree and the speed to the nearest mile per hour.
41. URGENT MATH!!

Q1: Robert can paint a room in 12 hours. Dennis and Vince can paint the room in 10 hours & 9 hours respectively. If Dennis and Vince work together for 2 hours, How long will it take Robert to finish the job? I think it's 12 (because it says it, but I think the question was how...
42. elements of calculus

cost, revenue, and profit are in dollars and x s the number of units cost: if the cost function for a particular good is C(x)= 3x^2 +6x + 600, what is the (a) marginal cost function (b) marginal cost if 30 units are produced? (c) interpretation of your answer in part (b)?
43. math

elsie, after spending one fifth of her allowance for candy and one half of what was left over for flowers had 72 cents remaining. How manu cente did she have at first?
44. Chemistry

Describe in detail how you would make one molar solution of sodium chloride. Do I add the atomic masses of Na and Cl and then find the mols? And the after that you would just add 1L of water, correct?
45. uniben

A rubber ball is dropped from a height of 10meters,suppose it rebounds one-half the distance after each fall.find the total distance the ball travels before coming to rest.

Nadia collected the data in the table on the left using a CBR after a ball was dropped. (a) Enter the data into L1 and L2 using a TI-83 Plus. Graph the relation. (b) Without looking at the graph, how do you know that the relation is not linear? (c) Use regression to find the ...
47. hum130

Indigenous Culture Web Site Review Template Question Response Web site 1 URL: Name of Indigenous culture/religion presented in Web site Consider the examples of roles and observances held sacred by these people. Is this practice being kept alive? Has the culture/religion ...
48. Literature

1. The metaphor "No man is an island entire of itself" means: a)everyone should participate in one religion to be unified b)the puritan views are the correct views c)all of mankind is a single unit, created by God d) mankind lives apart from one another I chose c. 2. The ...
49. algebra

Dilbert invests a total of \$14,000 in two accounts paying 9% and 15% simple interest, respectively. How much was invested in each account if, after one year, the total interest was \$1,350.00. A) Enter an equation that uses the information as it is given that can be used to ...
50. Chemistry

So this is a three part question. I solved the first part correctly but I need help with the second and third. Q: The dissociation equilibrium constants for the protonated form of of alanine (a diprotic amino acid, H2X+)are Ka1 = 4.6 x 10^-3 and Ka2 = 2.0 x 10^-10. Assume that...
51. Calculus rate of change

A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. After 5 minutes, how fast is the base area of the base increasing? I honestly have no idea how to start this ...
52. Personal Finance

Bernie and Pam Britten are a young married couple beginning careers and establishing a household. They will each make about \$50,000 next year and will have accumulated about \$40,000 to invest. They now rent an apartment but are considering purchasing a condominium for \$100,000...
53. PERSONAL FINANCE

Bernie and Pam Britten are a young married couple beginning careers and establishing a household. They will each make about \$50,000 next year and will have accumulated about \$40,000 to invest. They now rent an apartment but are considering purchasing a condominium for \$100,000...
54. Personal Finance

Bernie and Pam Britten are a young married couple beginning careers and establishing a household. They will each make about \$50,000 next year and will have accumulated about \$40,000 to invest. They now rent an apartment but are considering purchasing a condominium for \$100,000...

Convert 45 miles per hour to feet per hour. Round your answer to the nearest hundredth, if necessary.
56. math

If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest ...
57. Finance (Coupon Bonds)

I am having a hard time starting on how to calculate this please. You purchased a \$1,000 five percent coupon bond that matures in 10 years. How much would your bond be worth if interest rates fall to 4% the day after you purchase the bond? What would the bond be worth in one ...
58. Algebra

Can somebody help me please? As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a.) The sales rep. here tells you they also have two floor plans available, but they only have 38 ...
59. Chemistry 152

For which of the following processes would the entropy change be positive? Choose one answer. a. Hg(l)(45C)----- Hg(l)(25C) b. H2O(l----H2O(s) c. He (g) (1 atm)------- He(g)(10 atm) d. I2(s)------I2(aq) e. Ag+ (aq) +Br-(aq)------AgBr(s) I figure that it wasn't A or B but the ...
60. algebra

A graduated cylinder with a radius of 3 cm contains water to a height of 9 cm. Yann adds 15 steel balls, each with a diameter of 2.54 cm. What is the total volume of the contents in the cylinder after the balls are added? Use 3.14 to approximate pi and round your answer to one...
61. Math

One positive number is one-fifth of another number. The difference between the two numbers is 160, find the numbers.
62. Math - Probability

I want to know that if 1 person in 50 has one blue eye and one green and you have 700 people living in an area in groups of four. What is the probability that three of those people would end up together? Would it be greater or less of one of those people only had a relation ...
63. c++ programming

Solve the following problem. Apply all the steps i.e decomposition, Flowcharting and Pseudo code. Also write C++ program. Design and Write an interactive program that computes the salary in Rupees of a part-time employee based on: - Number of days worked. - Number of hours per...
64. Calculus

I saw this question asked, but I didn't understand the answer format. My prof doesn't use dx and dy after he has differentated the problem. He just uses (for example) 8x+2+y+xy(prime) The question is this: 4x^2+2x+xy=12 and y(2)=-4 find y(prime)(2) by implicit differentiation.

A 7.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.8 N. Find the speed of the block after it has moved 2.8 m. Answer in units of m/s
66. SCIENCE asap :P

Twice a year on Earth, the number of hours of darkness is equal to the number of hours of sunlight. These events, where both day and night are 12 hours, are the spring and autumn equinoxes.Which of these describes the orientation of the sun and Earth on these two days? A.Earth...
67. math

Rob drove to his friends house and back. IT took one hour less time to get there than it did to get back. The average speed on the trip there was 80km/h. the average speed on the way back was 60km/h. How many hours did the trip there take?
68. College Algebra

The length of a rectangle is fixed at 18 cm. What widths will make the perimeter greater than 78 cm.? *widths must be greater than __cm. I have been working at this for two hours and even after reviewing my readings I am just as confused as ever.
69. Math

return on investment assuming that she (a) pays the full \$200,000 from her own funds or (b) borrows \$150,000 at 8%. Then discuss the effect, if any, of leverage on her rate of return. (Hint: Earnings before interest & taxes minus Interest expenses (if any) equals Earnings ...

The number has 7 digits It is evenly divisible by 100 The value of one of the digits is 60,000 The digit in the hundreds place is both even and prime The digit in the thousandr place is half the value of the digit in the ten thousands place The digit in the hundred thousands ...
71. managerial accounting

The following direct materials and direct labor data pertain to the operations of Solario Manufacturing Company for the month of August Costs Quantities Actual labor rate \$13 per hour Actual hours incurred and used 4,200 hours Actual materials price \$128 per ton Actual ...
72. Math

find the intervals of increase and decrease of f(x)=3/(x*2+11) -1 ? My f'(x) is-6x/(x^2+1)^2, after that i didn't know how to proceed next bcus i didn't know how to find x to substitute in the f'(x).
73. ALGEBRA

How do you find the domain of a function when the number is outside of the paranthesese. Example would be y=(square root of x)+3. I know that to find the domain when the number is under the square root, you have to make the number greater than or equal to zero and then add or ...
74. Algebra

How do you find the domain of a function when the number is outside of the paranthesese. Example would be y=(square root of x)+3. I know that to find the domain when the number is under the square root, you have to make the number greater than or equal to zero and then add or ...
75. Math

How do I set this up and solve it? Tom has a collection of 30 CDs and Nita has a collection of 15 CDs. Tom is adding 1 CD a month to his collection while Nita is adding 4 CDs a month to her collection. Find the number of months after which they will have the same number of CDs.
76. physics

'a weather station monitors a storm using a radar system. the radio wave pulse emitted is received back at the transmitter after 0.34 ms. the wavelength emitted was 5.6 cm and that received after reflection from the storm was 1 billionth of a meter longer. what information ...
77. Math

Is there a case when you might prefer algebraically over graphically solving a system? Why or why not? Think about the type of possible solutions and how the method might affect your choice. My answer: A case when I would prefer a algebraically would be trying to figure out ...
78. math

neglecting wind restitance,the height,h,in feet,of a sky diver,t,seconds after she jumps from an airplane 1,648 above the ground is given by the formula h=-16ft square +1648.if the parachute opens 4.5 secinds after the sky diver leaveshe airplane,about how far will she be from...
79. Math

If you could select another number to represent the number of minutes in an hour, what would be a good choice? Why? I am not sure what to chose so I need help
80. accounting

please can you help how to get the answers fpr this problem solving .. I am really could not get the correct answer. problem: On Jan 1, 2011, the Rhiri, Brit & Keisha partnership is formed. Rhiri and Brit contribute cash of \$30,000 and \$20,000 respectively, while Keisha ...
81. Algebra

Parking in a student parking lot costs 2.00 for the first half hour and \$1.75 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time a student can park for \$9.00? Show your work.
82. maths - pls check answer

. A single die is rolled one time. Find the probability of rolling an odd number or a 6. 3/6 + 1/6 = 4/6 = 2/3 = .667
83. Algebra

The growth of stray cat population, n(t) in a small town can be modeled as n(t) = no e 0.15 t where t is time in years. Given that in year 1995, the town had 20 stray cats. a) Find the projected population after 5 years b) Find the number of years required for the stray-cat ...
84. trig

A plane has an airspeed of 200 miles per hour and a heading of 28.0°. The ground speed of the plane is 207 miles per hour, and its true course is in the direction of 38.0°. Find the speed and direction of the air currents, assuming they are constants. (Round your answers to ...
85. Math

How many hours are in 40,000 seconds?
86. math

On a TV game show, a contestant makes \$800 for every correct answer but loses \$500 for every wrong answer. After answering 26 questions, Sarah broke even. How many questions did she answer correctly?
87. MATH

On a TV game show, a contestant makes \$600 for every correct answer but loses \$500 for every wrong answer. After answering 22 questions, Sarah broke even. How many questions did she answer correctly?
88. calculus

1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 2. what trig function never crosses the x-axis and has a value of 2 at π/6? are these correct? 3. what trig function has a period of π and is undefined for -π/...
89. physicsssss

You are driving home from school steadily at 95 km/h for 130 km. It then begins to rain and you slow to 60 km/h. You arrive home after driving 3 hours and 40 minutes. 1-How far is your hometown from school? 2-What was your average speed?
90. chemistry kinetics

Decomposition of an organic compound A follows first order kinetics. Initial concentration of A is 2 M. If rate constant of the decomposition is 3.58 × 10^−6 min^-1 , calculate the rate after 3 hours.
91. math30

The mass of a radioactive sample is represented in the graph below. The initial mass of 32 mg decays to 8 mg after 21 hours. 1)What is the half-life of the radioactive sample, in minutes? 2)Solve each equation. a. 4 8x-1 = 8 b. 3^(2x-5) = 1/27x
92. college physics

you are driving home from school at 90 km/h. it then began to rain and you slow to 50km/h. your arrive home after driving 3 hours and 20 minutes, how far is your hometown from school? what is the average speed?
93. Algebra Applications

Jacqueline is 115 miles away from Miranda. They are traveling towards each other. If Miranda travels 9 mph faster than Jacqueline and they meet after 5 hours, how fast was each traveling?
94. physics

The figure shows an overhead view of a uniform 2.00-kg plastic rod of length 1.20 m on a very slick table. One end of the rod is attached to the table, and the rod is free to pivot about this point without friction. A disk of mass 36.0 g slides without friction toward the ...
95. Statistics

The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are test results, ...
96. Math

During weeks in a certain flu season, the rate at which the number of cases of influenza per 100,000 people in a country changed could be approximated by I'(t)=3.298e^0.1044t where I is the total number of people per 100,000 who have contracted influenza and t is time measured...
97. fin

The following tabulation gives earnings per share figures for the Foust Company during the preceding 10 years. The firm’s common stock, 7.8 million shares outstanding, is now (1/1/03) selling for \$65 per share, and the expected dividend at the end of the current year (2003) ...
98. algebra

1.Find the domain of the function. Make sure answer is in interval notation. g(x)=7x/x^2-4 2.Find the domain of the function. Make sure answer is in interval notation. f(x)=5x square root of x-2
99. Education

As children grow older and become more skilled in math, they A) rely more on memorized facts. B) count all the numbers instead of counting on from the largest number. C) must switch from multiplicative reasoning to additive reasoning. D) have a little more trouble remembering ...
100. math algebra

At a college, records show that the average persons grade point average, G, is a function of the number of hours he or she studies and does homework per week h. The grade point average can be estimated by the equation : G=0.01h^2 +0.2h+1.2 To obtain a 3.2 GPA how many hours ...