A population numbers 15,000 organisms initially and decreases by 7.9% each year.

Question

Suppose P represents population, and t the number of years of growth. An exponential model for the population can be written in the form P=a⋅bt where

PP =   

Answer 1

P=15000b^t

15000 -15000(.079) = 15000b^1

b=1-.079= .921

P= 15000(.921)^t