Pete Smith found in his attic a Woody Woodpecker watch in its original box. It had a price tag of $4.90. Pete brought the watch to an antiques dealer and sold is for $31. What was the percent increase?

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