Answer:
≤ 78
Explanation:
By setting up an inequality and making 'x' the highest score you can shoot in your 5th game, you can solve for the value of 'x'. Average is the sum of all the scores divided by the number of games:

The first step to solving for 'x' is to multiply both sides of the inequality by 5:

Now, subtract 292 from both sides:
292 + x - 292 ≤ 370-292 or x ≤ 78