A bacteria culture grows with a constant relative growth rate. After 2 hours there are 600 bacteria and after 8 hours the count is 75,000. (a) Find the initial population.P(0) =  bacteria(b) Find an expression for the population after t hours.P(t) =        (c) Find the number of cells after 7 hours. (Round your answer to the nearest integer.)P(7) =  bacteria(d) Find the rate of growth after 7 hours. (Round your answer to the nearest integer.)P'(7) =  bacteria/hour(e) When will the population reach 200,000? (Round your answer to one decimal place.)t =  hours

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter7: Exponents And Exponential Functions
Section: Chapter Questions
Problem 34PT
Question

A bacteria culture grows with a constant relative growth rate. After 2 hours there are 600 bacteria and after 8 hours the count is 75,000.

(a) Find the initial population.
P(0) =  bacteria

(b) Find an expression for the population after t hours.
P(t) = 
 
 
 


(c) Find the number of cells after 7 hours. (Round your answer to the nearest integer.)
P(7) =  bacteria

(d) Find the rate of growth after 7 hours. (Round your answer to the nearest integer.)
P'(7) =  bacteria/hour

(e) When will the population reach 200,000? (Round your answer to one decimal place.)
t =  hours
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