Final answer:
Matt's overall point balance is calculated by summing his gains and losses in the game, which results in a balance of -9 points, making the answer Choice B) -9.
Step-by-step explanation:
To calculate Matt's overall point balance, we will sum up all his points from the game. Matt's series of points won and lost during the game can be represented as follows: +7 for the points gained, -10 for the points lost, +2 for the points gained again, and -8 for the points lost finally.
The calculation would then be:
7 (gained) - 10 (lost) + 2 (gained) - 8 (lost) = -9
When we perform these operations, the result is a total of -9 points. This means Matt ended up losing 9 points overall.
Therefore, the correct answer to Matt's overall point balance is Choice B) -9.