Question

Which equation represents a population of 250 animals that decreases at an annual rate of 12% ?

Answer 1

f(t)=250(1-0.12)^t

or

f(t)=250(0.88)^t

Explanation:

Use the formula f(t)=P(1+b)^t

Plug in the information.

f(t)=250(1-0.12)^t

or

f(t)=250(0.88)^t

The only thing I did in the second equation is I subtract 0.12 from 1.

Hope this helps!