What is the simplified form of 9-m^-3n^5 x 2m^-3n^-6 a.) -18m^5n b.) -18/m^5n c.) -18m^6/n^30 d.) -18m^6n^30 i think it’s either c or d

Which representation has a constant of variation of -2.5

Ineed to know the answer to this algebra question.

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.