Help me find the average rate of change!

Thank you in advance

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.

Which expression will have the same sum as 3_8 + 1/4?

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74