Help asp pls help me

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

Solve 13 + w/7= -18 (w/7 is a fraction)