This exercise uses the population growth model. A culture starts with 8700 bacteria. After 1 hour the count is 10,000.
This exercise uses the population growth model.
A culture starts with 8700 bacteria. After 1 hour the count is 10,000.
(a) Find a function that models the number of bacteria n(t) after thours.
(b) Find the number of bacteria after 2 hours.
(c) After how many hours will the number of bacteria double?
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This exercise uses the population growth model. A culture starts with 8700 bacteria. After 1 hour the count is 10,000.
This exercise uses the population growth model. A culture starts with 8100 bacteria. After 1 hour...
This exercise uses the population growth model. A culture starts with 8100 bacteria. After 1 hour the count is 10,000. (a) Find a function that models the number of bacteria n(t) after t hours. (Round your r value to three decimal places.) n(t) = (b) Find the number of bacteria after 2 hours. (Round your answer to the nearest hundred.) bacteria (C) After how many hours will the number of bacteria double? (Round your answer to one decimal place.) hr
This exercise uses the population growth model. The count in a culture of bacteria was 400...
This exercise uses the population growth model. The count in a culture of bacteria was 400 after 2 hours and 25,600 after 6 hours. (a) What is the relative rate of growth of the bacteria population? Express your answer as a percentage. (Round your answer to the nearest whole number.) 104 % (b) What was the initial size of the culture? (Round your answer to the nearest whole number.) 200 x bacteria (c) Find a function that models the number...
A bacteria culture starts with 260 bacteria and grows at an exponential rate. After 3 hours...
A bacteria culture starts with 260 bacteria and grows at an exponential rate. After 3 hours there will be 780 bacteria. Give your answer accurate to at least 4 decimal places. (a) Express the population after thours as a function of t. P(t)- Preview (b) What will be the population after 7 hours? Preview bacteria ( How long will it take for the population to reach 28707 Preview hours Determine an algebraic expression for the function graphed below. Write your...
This exercise uses the population growth model. The fox population in a certain region has a...
This exercise uses the population growth model. The fox population in a certain region has a relative growth rate of 5% per year. It is estimated that the population in 2013 was 16,000. (a) Find a function n(t) = n0ert that models the population t years after 2013. n(t) = (b) Use the function from part (a) to estimate the fox population in the year 2020. (Round your answer to the nearest whole number.) (c) After how many years will...
Model Exponential Growth and Decay (4.7.38-39) A biologist recorded a count of 300 bacteria present in...
Model Exponential Growth and Decay (4.7.38-39) A biologist recorded a count of 300 bacteria present in a culture after 5 minutes and 1050 bacteria present after 28 minutes. a. To the nearest whole number, what was the initial population in the culture? The initial population was around 219 bacteria b. Rounding to four decimal places, write an exponential equation representing this situation. B(t) 10e 30t c. To the nearest minute, how long did it take the population to double? The...
(1 point) A bacteria culture starts with 240 bacteria and grows at a rate proportional to its size. After 5 hours there will be 1200 bacteria. (a) Express the population after t hours as a function of t. population: (function of t) (b) What will be th
(1 point) A bacteria culture starts with 240240 bacteria and grows at a rate proportional to its size. After 55 hours there will be 12001200 bacteria.(a) Express the population after tt hours as a function of tt.population: (function of t)(b) What will be the population after 99 hours?(c) How long will it take for the population to reach 22702270 ?
Previous Problem List Next (1 point) A bacteria culture starts with 160 bacteria and grows at...
Previous Problem List Next (1 point) A bacteria culture starts with 160 bacteria and grows at a rate proportional to its size. After 5 hours there will be 800 bacteria. (a) Express the population after I hours as a function of t. population: (function of t) (b) What will be the population after 9 hours? (c) How long will it take for the population to reach 1590 ? Note: You can earn partial credit on this problem.
Modeling Exponential Growth and Decay A biologist recorded a count of 360 bacteria present in a...
Modeling Exponential Growth and Decay A biologist recorded a count of 360 bacteria present in a culture after 7 minutes and 1200 bacteria present after 20 minutes. a. To the nearest whole number, what was the initial population in the culture? The initial population was around bacteria. b. Rounding to four decimal places, write an exponential equation representing this situation. B(t) = c. To the nearest minute, how long did it take the population to double? The doubling time of...
A biologist recorded a count of 340 bacteria present in a culture after 9 minutes and...
A biologist recorded a count of 340 bacteria present in a culture after 9 minutes and 950 bacteria present after 22 minutes. A. To the nearest whole number, what was the initial population in the culture? B. Round to four decimal places, write an exponential equation representing this situation. C. To the nearest minute, how long did it take the population to double?
7. (7 pts) The number N() of bacteria in a culture is growing exponentially. When t=0...
7. (7 pts) The number N() of bacteria in a culture is growing exponentially. When t=0 hours, Nt) = 5000 bacteria, and when 1 = 5 hours, N(O) = 30,000 bacteria. W a. Find the growth rate k. (Round to four decimal places.) In solamyes Isinoshorts non 11001nix on bald #7a: b. Write the function () that represents the number of bacteria after hours. #7b: c. After how many hours will the number of bacteria be 100,000? Round to the...
This exercise uses the population growth model. A culture starts with 8100 bacteria. After 1 hour the count is 10,000. (a) Find a function that models the number of bacteria n(t) after t hours. (Round your r value to three decimal places.) n(t) = (b) Find the number of bacteria after 2 hours. (Round your answer to the nearest hundred.) bacteria (C) After how many hours will the number of bacteria double? (Round your answer to one decimal place.) hr
This exercise uses the population growth model. The count in a culture of bacteria was 400 after 2 hours and 25,600 after 6 hours. (a) What is the relative rate of growth of the bacteria population? Express your answer as a percentage. (Round your answer to the nearest whole number.) 104 % (b) What was the initial size of the culture? (Round your answer to the nearest whole number.) 200 x bacteria (c) Find a function that models the number...
A bacteria culture starts with 260 bacteria and grows at an exponential rate. After 3 hours there will be 780 bacteria. Give your answer accurate to at least 4 decimal places. (a) Express the population after thours as a function of t. P(t)- Preview (b) What will be the population after 7 hours? Preview bacteria ( How long will it take for the population to reach 28707 Preview hours Determine an algebraic expression for the function graphed below. Write your...
Model Exponential Growth and Decay (4.7.38-39) A biologist recorded a count of 300 bacteria present in a culture after 5 minutes and 1050 bacteria present after 28 minutes. a. To the nearest whole number, what was the initial population in the culture? The initial population was around 219 bacteria b. Rounding to four decimal places, write an exponential equation representing this situation. B(t) 10e 30t c. To the nearest minute, how long did it take the population to double? The...
Previous Problem List Next (1 point) A bacteria culture starts with 160 bacteria and grows at a rate proportional to its size. After 5 hours there will be 800 bacteria. (a) Express the population after I hours as a function of t. population: (function of t) (b) What will be the population after 9 hours? (c) How long will it take for the population to reach 1590 ? Note: You can earn partial credit on this problem.
Modeling Exponential Growth and Decay A biologist recorded a count of 360 bacteria present in a culture after 7 minutes and 1200 bacteria present after 20 minutes. a. To the nearest whole number, what was the initial population in the culture? The initial population was around bacteria. b. Rounding to four decimal places, write an exponential equation representing this situation. B(t) = c. To the nearest minute, how long did it take the population to double? The doubling time of...
7. (7 pts) The number N() of bacteria in a culture is growing exponentially. When t=0 hours, Nt) = 5000 bacteria, and when 1 = 5 hours, N(O) = 30,000 bacteria. W a. Find the growth rate k. (Round to four decimal places.) In solamyes Isinoshorts non 11001nix on bald #7a: b. Write the function () that represents the number of bacteria after hours. #7b: c. After how many hours will the number of bacteria be 100,000? Round to the...
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