From 2006 to 2010, the population of a town declined to 22,000. the population is expected to continue to decline at a rate of 2.8% each year.

what will the population be in 2040?

round to the nearest whole number

Population can be expressed as P = 22000(0.972)^t, when t = time since 2010.

So, in 2040, t = 30.

P(30) = 22000(0.972)^(30)
P = 9384.49

Round down to 9384 people= that is the expected population in 2040.

hope this helps :)