Assume that the number of bacteria follows an exponential growth model: P(t) = Poekt. The count in the bacteria culture was 700 after 15 minutes and 1700 after 35 minutes. (a) What was the initial size of the culture? (b) Find the population after 75 minutes. (c) How many minutes after the start of the experiment will the population reach 15000?

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter10: Exponential And Logarithmic Functions
Section10.5: Solve Exponential And Logarithmic Equations
Problem 10.88TI: Researchers recorded that a certain bacteria population declined from 700,000 to 400,000 in 5 hours...
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Assume that the number of bacteria follows an exponential growth model: P(t) = Poekt. The count in the bacteria culture was 700 after 15 minutes and
1700 after 35 minutes.
(a) What was the initial size of the culture?
(b) Find the population after 75 minutes.
(c) How many minutes after the start of the experiment will the population reach 15000?
Note: webwork usually expects four significant digits so don't round your answers.
Transcribed Image Text:Assume that the number of bacteria follows an exponential growth model: P(t) = Poekt. The count in the bacteria culture was 700 after 15 minutes and 1700 after 35 minutes. (a) What was the initial size of the culture? (b) Find the population after 75 minutes. (c) How many minutes after the start of the experiment will the population reach 15000? Note: webwork usually expects four significant digits so don't round your answers.
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