Jackson likes to go running around the perimeters of two fields near his home. The two fields have side dimensions as shown in the diagrams. If the perimeter of rectangle A is f(x) and the perimeter of rectangle B is g(x), which function represents the difference, h(x), in the perimeters of the rectangles? h(x) = 0.5x2 – 3x
h(x) = –x + 2
h(x) = x + 6
h(x) = –x – 6