Jim has calculated the area of a rectangle to be x^3 + x^2 + x + 1. if the width of the rectangle is x + 1, then its length is a) x^2 + 1 b) x^2 + x + 1 c) x^3 + x^2 d) x^3 + x^2 + x

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?