Question

A city population, which was initially 15,500, has been dropping by 3% a year. Write an exponential function and graph the function. Use the graph to predict when the population will drop below 8,000.

Answer 1

F(t)=15,500(1=.03)t

Exponential decay function is 

a=15500
r=3%=.03
t=time in years

F(t)=15,500(.97)t