If the wall is 8 feet high, what is the combination height of all of the heights of the bouncy balls?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.