The initial size of a culture of bacteria is 1000. After 1 hour the bacteria count is 8000. If the growth of the population can be described as a exponential function f(x) = Aekt (a) find the exact formula of the function f(x). (b) Find the population after 2.5 hours. (c) After how many hours will the number of bacteria reach 15,000? (d) Sketch the graph of the population function.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.2: Applications Of Exponential Functions
Problem 41E
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part C D

9
The initial size of a culture of bacteria is 1000. After 1 hour the bacteria count is
8000. If the growth of the population can be described as a exponential function
f(x) = Aekt
(a) find the exact formula of the function f(x).
(b) Find the population after 2.5 hours.
(c) After how many hours will the number of bacteria reach 15,000?
(d) Sketch the graph of the population function.
Transcribed Image Text:9 The initial size of a culture of bacteria is 1000. After 1 hour the bacteria count is 8000. If the growth of the population can be described as a exponential function f(x) = Aekt (a) find the exact formula of the function f(x). (b) Find the population after 2.5 hours. (c) After how many hours will the number of bacteria reach 15,000? (d) Sketch the graph of the population function.
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