What do the rectangular prism formulas have in common?

Rewrite the following without an exponent. (5/8)-1

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.