The function f(x) = x2 describes the area of a square, f(x), in square inches, whose sides each measure x inches. a. If x is changing, find the average rate of change of the area with respect to x as x changes from 3 inches to 3.2 inches and from 3 inches to 3.02 inches. b. If x is changing, find the instantaneous rate of change of the area with respect to x at the moment when x = 3 inches. . . . a. As x changes from 3 inches to 3.2 inches, the average rate of change of the area with respect to x is square inches per inch. (Type an integer or a decimal.)