11. Evaluate the following integral using a change of variables. Please refer to attached image.

Evaluate the following integral using a change of variables. y - X 4 y + 2x + 1 dA, where R is the parallelogram bounded by y - x = 2, y - x= 4, y + 2x =0, and y + 2x = 4 R SS 4 y - X dA = y + 2x + 1 R (Simplify your answer.)