Find the volume of the region under the graph of f(x,y)=2x+y+1 and above the region y2≤x, 0≤x≤16.

Find the volume of the region under the graph of f(x,y)=2x+y+1 and above the region y^2≤x, 0≤x≤16.

can anyone help me on this question?

I tried doing this: integral[0,16], integral[0, sqrt(x)] 2x+y+1 dy dx
and ended up with volume of 13888/15 which was wrong :S

integral[-sqrt(x), sqrt(x)]
the rest should be right.