12-3=9 there is only 1 way to find 12-3
The frame is at each side of the picture so the area is (25 + 2x) times (32 +2x), (which multiplies out to 4x^2 + 114x + 800 square inches). ie if the frame <span>is an inch and a half wide then the area is 28 x 35 sq ins, ie 980 sq ins.</span>
The first derivative is 5
Lmk if this helped if not im sorry
