The number of bacteria in a certain culture increases from 600 to 1800 between 6:00am and 8:00am. a) Assuming that the growth rate of the number of bacteria is proportional to the number of bacteria present, we can write dn = kn, where the number of bacteria n is a function of time t. By integration and using the given information, find the value of k. b) Using the value of k found in item a), i. write the exponential growth equation for n(t); ii. then, simplify your answer to the form n(t) = Cabt, where a is an integer, C and b are constants to be determined, and n(t) is the number of bacteria as a function of time t. c) What is the number of bacteria present at 10:00am? d) At what time, in hours and minutes, will there be 9000 bacteria present in the culture?

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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The number of bacteria in a certain culture increases from 600 to 1800 between 6:00am
and 8:00am.
a) Assuming that the growth rate of the number of bacteria is proportional to the
number of bacteria present, we can write dn = kn, where the number of bacteria
dt
n is a function of time t. By integration and using the given information, find
the value of k.
b) Using the value of k found in item a),
i. write the exponential growth equation for n(t);
ii. then, simplify your answer to the form n(t) Cabt, where a is an integer,
C and b are constants to be determined, and n(t) is the number of bacteria
as a function of time t.
=
What is the number of bacteria present at 10:00am?
d) At what time, in hours and minutes, will there be 9000 bacteria present in the
culture?
Transcribed Image Text:The number of bacteria in a certain culture increases from 600 to 1800 between 6:00am and 8:00am. a) Assuming that the growth rate of the number of bacteria is proportional to the number of bacteria present, we can write dn = kn, where the number of bacteria dt n is a function of time t. By integration and using the given information, find the value of k. b) Using the value of k found in item a), i. write the exponential growth equation for n(t); ii. then, simplify your answer to the form n(t) Cabt, where a is an integer, C and b are constants to be determined, and n(t) is the number of bacteria as a function of time t. = What is the number of bacteria present at 10:00am? d) At what time, in hours and minutes, will there be 9000 bacteria present in the culture?
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