Step by step 7 ,9, and 11 please. EVEN IF U CANT DO ALL, u can help with 1 or 2. Ill mark

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2