Three-fourths was subtracted from a number, and then 5 was added to the result. the sum was -7.

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36