Can anyone please help me with this question please? I am stuck on it!

Express the integral / f(x, y, z) dV as an iterated integral in six different ways, where E is the solid bounded by z = 0, x = 0, z = y - 6x and y = 18. 1. ( 92 (z) (hz(I, y) 91 ( 2 ) Jhi(z,y ) f(z, y, z) dzdydx a = 91(x) = 92(z) = hi(z, y) - h2(z,y) = (92 (y) (hz(z, y) gi ( 3 ) Jhi(z,y ) f(x, y, z) dzdxdy a - g1(y) - 92 (y) = hi(I, y) - h2(z, y) - (92 ( 2) (h2 (y, z ) f(x, y, z) dxdydz 91 ( 2 ) Jmi ( y,z ) 91 ( z ) - 92 ( 2 ) - hi(y, z) - h2(y, 2) - 6 92 (3 ) (hz (y, z ) f(z, y, z) dxdzdy gi (y) J hi ( y,z ) 91 (y) = 192 () hi (y, z) = h2 (y, z)