Please Help Me!

1) Evaluate the iterated integral: | 8V/1-x dydx (4 pts) 2) Interpret the double integral as a volume and evaluate it. (5 pts) IS(2+ (16-x - y' )dA; R: x20 andx' +y $16 3) Sketch the region and evaluate the double integral JJ x y dA where R: 05x59-y', -1sys3 using the method of iteration. (6 pts) 4) Change the order of integration to get an equivalent expression. (5 pts) ff( x,y )dy dx