The town of Hamlin has a growing rat population. Eight summers ago, there were 20 rat sightings, and the numbers have been increasing by about 20% each year.
a. Give a recursive formula that models the increasing rat population. Use the number of rats in the first year as u1.
b. About how many rat sightings do you predict for this year?
c. Define variables and write an equation that models the continuous growth of the rat population?