2. Evaluate the triple integral:
•$\iiint_E 2xdV$ where
$E = \{(x, y, z) : 0 \le y \le 2, 0 \le x \le \sqrt{4 - y^2}, 0 \le z \le y\}$
•$\iiint_E yz \cos(x^5)dV$ where
$E = \{(x, y, z) : 0 \le x \le 1, 0 \le y \le x, x \le z \le 2x\}$
•$\iiint_E y dV$ where E is bounded by the planes $x = 0, y = 0, z = 0,$ and
$2x + 2y + z = 4.$