The midpoint is exactly in the middle meaning VW = WX 3x+7 = x + 25 solve from x 3x + 7 = x + 25 subtract 7 from both sides 3x = x + 18 subtract x from both sides 2x = 18 divide both sides by 2 x = 9 Now we have x = 9 but we aren't done.
plug what we found into the expressions 3x + 7 3(9) + 7 27 + 7 34
If the length is 7/6 the width w then the perimeter is w + (7/6)w + w + (7/6w) = 2((7/6)w + w) = 2w + (14/6)w = (26/6)w = (13/3)w. So the answer is the last one.
