What are the similarities between a factor and multiple

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Pls the last one and it has to be like number 6

Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.