Graph f(x) = -1/2x click on the graph till f(x) =-1/2x appears

Write the rational number in lowest terms 99/-15

Factor and solve to find roots x squared -x - 90 =0

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap