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anonymous
 5 years ago
Is my answer correct?
Write an exponential function to model this situation: a population of 420 animals decreases at an annual rate of 21%. Then predict the value of the function after 5 years (to the nearest whole number).
My answer:
f(x) = 420(1.21)^x; 2541 animals
anonymous
 5 years ago
Is my answer correct? Write an exponential function to model this situation: a population of 420 animals decreases at an annual rate of 21%. Then predict the value of the function after 5 years (to the nearest whole number). My answer: f(x) = 420(1.21)^x; 2541 animals

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Hero
 5 years ago
Best ResponseYou've already chosen the best response.1The function is decreasing so that means that the value in parentheses would have to be between 0 and 1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I misread the question, I thought it said it was increasing.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Would it be, f(x) = 420(0.79)x; 129 animals?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[P(t)=420\times (.79)^t\] \[P(5)=420\times (.79)^5=129\] rounded
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