Answer:
2
Step-by-step explanation:
Well that's division.
•36 divided by 9 is equal to 4.
• 81 divided by 9 is equal to 9.
•45 divided by 5 is equal to 9.
•56 divided by 7 is equal to 8.
•42 divided by 7 is equal to 6.
A because the angles match
I should answere should be C
B 5x+20 hope this helps!!