the base of a rectangular prism has an area of 9 square units. there are 4 layers of unit cubes. what is the volume of the rectangular prism?

How is working backward similar to solving an equation?

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so