John paid a $75 initial fee to join a sports club and a monthly fee of $15 per month. write an expression that shows how much john will spend on his membership at the sports club.

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