Another one he doesn't think I'm right on.

A. 8 is the answer
If the triangles are similar then their sides need to be in the same ratio. So, if 22 become 11, then the ratio is 2:1. So, for 16 it becomes 8.
Answer:
x = 8
Step-by-step explanation:
22/16 = 11/x
x = 11 . 16/22
x = 8