1. The problem statement, all variables and given/known data Find the mass and center of mass of the lamina that occupies the region D and has the given density function ρ. D is bounded by the parabola x=y2 and the line y = x - 2; ρ(x, y)=3 2. Relevant equations m=[itex]\int[/itex][itex]\int[/itex]D ρ(x, y) dA 3. The attempt at a solution Basically I just need help setting up the integral for the mass, and I can get the rest. What I did was set √x = x - 2, and solve for x, giving me x = 1 and 4. Therefore I made my integral for mass m=[itex]\int[/itex]41[itex]\int[/itex]√xx-2 3 dydx. However, I found online that it should be set up as follows: When you integrate each function you get different answers, so how do you know which way to set up the integral? I guess what I am asking is how do I know if the integral should be in the order dydx or dxdy, because both seem right here.