PLEAASE HELP i need to know the correct intervals that are positive and negative. In the specific question, it shows a students answer that is incorrect and their postive says [-1, 3] and the negative (-infinity, -1) and (3, infinity).

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