Answer: 28
Explanation:
To answer, we must first create an equation.
Let x = # of games he can play
4 + 0.50x = 18
Now we solve
4 + 0.50x = 18
-4 -4
--------------------
0.50x = 14
divide each side by 0.50
x = 28
So, the maximum number of games Elijah can play is 28