I would go with D) incenter but im not too sure.
x
Answer:
The answer should be 9375 (B)
Hope this helped!!!
I'm more visual, but if you're not, and this confuses you, ask me, and I'll explain it.
If x=3
Just replace the X with 3
So seven minus three equals four
If 3 is X than do 4 times 3 which that makes twelve.