Assume the pop. of world in 2002 is 6.2B and growing at a rate of 1.3% each year.

a. Set up a recurrence relation for pop. n years after 2002

b. find an explicit formula for the pop. of the world after n years

c. what will be the pop. on 2022

The recurrence relation I came up with is

A(n+1)= 1.3*A(n), where A(n) is 6.3B

But how do I incorporate modular exponentiation?