Look at the picture.
ΔZYX and ΔDYC are similar. Therefore the lengths of sides are in proportion:

DC = x
ZX = 16
DY = a
ZY = a + a = 2a
Substitute:

<em>multiply both sides by 16</em>

<h3>Answer: CD = 8</h3>
Answer:
<h2>(f•g)(10) = 37</h2><h2 />
Step-by-step explanation:
(f•g)(x) = (x - 4)² + 1
then
(f•g)(10) = (10 - 4)² + 1 = 6² + 1 = 37
14 x 10^3 = 14,000 (the elephants weight)
So the cat weighs 14 pounds