Answer:
It is first answer
Step-by-step explanation:
9 I think because 1/4 needs to have 4 of those to be a whole so yeah 9.
Answer: 
Step-by-step explanation:

a=2
b=-9
c=5





Answer: C. (-1, 2)
<u>Step-by-step-explanation:</u>
The center is the midpoint of the endpoints
→
, 
→
, 
→
, 
→ (-1 , 2)
The midpoint is (-1, 2)