Modeling with Mathematics:

A square-shaped parking lot with 100-foot sides is reduced by x feet on one side and extended by x feet on an adjacent side.

a) The area of the new parking lot is represpresented by (100+ x)(100 – x).
Find this product.

b) Does this area of the parking lot increase, decrease, or stay the same? Explain your thinking. (You can use example values for x to help explain.)