Can someone me with some math questions?

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called

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?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?