Could you help me with this question?

10. (12 points) Consider the double SS,(x + y)2 dA, where 2 is the trapezoid with vertices (1, 3), (3, 1), (9, 3), and (3, 9). (a) (2 points) Sketch the region n. (b) (4 points) Use the transformation u = x +y, v = 3x - y to sketch the transformed region. (c) (6 points) Set up the iterated integral in terms of u and v to evaluate SS( + y)2 dA. (No need to compute the actual value.) 7