PLEASE HELP ME I WILL GIV EBRAINLIEST set a has 5 elements that are all integers and a unique mode of 3.If the largest element is 9, the smallest is -3, and the mean of A is 4, what is the value of the second largest element in A? GIVE BRAINLIEST

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