Bacteria Culture The count in a culture of bacteria was 400after 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.(b) What was the initial size of the culture?(c) Find a function that models the number of bacteria n1t2after t hours.(d) Find the number of bacteria after 4.5 hours.(e) After how many hours will the number of bacteria reach50,000?

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section4.6: Modeling With Exponential Functions
Problem 14E
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Bacteria Culture 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.
(b) What was the initial size of the culture?
(c) Find a function that models the number of bacteria n1t2
after t hours.
(d) Find the number of bacteria after 4.5 hours.
(e) After how many hours will the number of bacteria reach
50,000?

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