Answer:
Option B
Step-by-step explanation:

Hope this helps
Answer:
3
Step-by-step explanation:
3 is a function because of the way associated with the second set
Answer:
B. {-2, 0, 1, 3}
Step-by-step explanation:
See attached image.
Answer:
A
Step-by-step explanation:
these two triangles are similar
therefore corresping sides are proportionate
12/8=9/x
12x=72
x=72/12=6