What percent of a is b? (write an equation)

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

Is it true or false i’m trying to pass this test so i can leave school

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x