There is a fee of $2.50 that is independent. There is also the game cost, $2.25, which is dependent on how many games a person plays.
The equation is 2.50 + 2.25x = 9.25
Solving the equation:
2.50 + 2.25x = 9.25
2.25x = 6.75
x = 3
You can bowl 3 games.
Hope this helps!! :)