Consider the following.
f(x, y, z) = 3
z=4-x
z=4+x
z=4-y²
(a) Express the triple integral $\iiint_E f(x, y, z) \, dV$ as an iterated integral for the given function f and solid region E.
(b) Evaluate the iterated integral.
$\int_{-2}^{2} \int_{z=-4}^{} \int_{}^{} 3 \, dx \, dz \, dy$