Answer:
D
Explanation:
We need to find the missing value to make sure it averages out to 250.
So they will be 5 rounds of different scores.
Since we dealing with averages, we need to set up a
equalivent equation to 250. We would add up all our previous scores and try to find the new x score and divide it by 5 and set it equal to 250. So our equation will look like.
Let x represent of our next game.

Multiply by 5 both sides



d is the answer