smallest animal that lives on land is the pygmy shrew this animal weighs about 5×10 with the power of -2 ounce which number shows another way to express 5×10 by the power of -2

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