15) The initial population of a culture of bacteria is 1000. After 2 hours the bacteria count is 8,000. a) Find a function n(t) = noe" that models the population after t hours. b) Find the population after 5 hours. c) After how many hours will the number of bacteria reach 32,000?

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section4.CT: Chapter Test
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15) The initial population of a culture of bacteria is 1000. After 2 hours the bacteria count is 8,000.
a) Find a function n(t) = noe" that models the population after t hours.
b) Find the population after 5 hours.
c) After how many hours will the number of bacteria reach 32,000?
Transcribed Image Text:15) The initial population of a culture of bacteria is 1000. After 2 hours the bacteria count is 8,000. a) Find a function n(t) = noe" that models the population after t hours. b) Find the population after 5 hours. c) After how many hours will the number of bacteria reach 32,000?
16) Suppose that $15,000 is invested in a savings account paying 5.6% interest per year.
a) Find the formula for the balance in the account after t years if interest is compounded monthly.
b) Find the formula for the balance in the account after t years if interest is compounded daily.
c) When, to the nearest year, will the balance be $30,000 if interest is compounded continuously?
Transcribed Image Text:16) Suppose that $15,000 is invested in a savings account paying 5.6% interest per year. a) Find the formula for the balance in the account after t years if interest is compounded monthly. b) Find the formula for the balance in the account after t years if interest is compounded daily. c) When, to the nearest year, will the balance be $30,000 if interest is compounded continuously?
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