Substitute the given values into the given formula and solve for the unknown variable. if necessary, round to one decimal place. i=prt; i=7280, p=26000, r=0.07. simple interest formula

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