Which number is a perfect cube?
A. 8
B. 9
C. 16
D. 25

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.

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Having a hard time understanding this question (see attachment).