Find the surface area of that portion of the planez= 1+2x-3ythat lies above the triangular region in thexy-plane with vertices (0, 0 ), (3, 0) , and (0, 2) .

I dont understand how to set up the integral or evaluate it....

Using the same plane, z=1+2x-3y, find the surface area that lies above the xy-plane

I am lost...can any one help????