im not quite sure how to solve this. i think (i might be wrong) im supposed to get the 4 down first OR im supposed to divide log.4 by 9? help!!

Raul works at a movie theatre. the function f(x) represents the amount of money raul earns per ticket, where x is the number of tickets he sells. the function g(x) represents the number of tickets raul sells per hour, where x is the number of hours he works. show all work to find f(g( and explain what f(g(x)) represents.