Posted by jefferson on .
In 1980, the population of a certain country was about 161 000. since then the population has decreased about 1% per year.
a. find an equation to model the population since 1980
b. estimate the population in 1990
c. suppose the current trend continues. predict the population 2000.

math 
Reiny,
P(t) = 161000(.99)^t, where t is the number of years since 1980
b) evaluate for t = 10
c) evaluate for t = 20
(time to update your textbook)