PLEASE CAN ANYONE FIGURE THIS OUT FOR ME!!!

Answer:
A
Step-by-step explanation:
So, they say X is Mari's points, and Y is Sarah's points.
So over the total of 8 games, they want to find of the difference between their point averages so it ends up being:
[tex]\frac{x-y}{8}[/tex]
Hope This Helps!
Stay Safe!