Please help!

Use Green's Theorem to evaluate the following line integral. Assume the curve is oriented counterclockwise. A sketch is helpful. (2y + 1,3x2 - 8) . dr, where C is the boundary of the rectangle with vertices (0,0), C (5,0), (5,3), and (0,3) D(2y + 1,3x2 - 8) . dr = (Type an exact answer.) C