Describe how to determine f(x) and g(x) when x = 5

How to do this , and can some one explain

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?