What exponential function represents the data in the table x f(x) 2 25 3 125

Ineed to learn how to solve this problem

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Need solving this second acceleration problem.