To find out the current total points that Lee has scored in his first 8 games, we need to add up all the points:
12 + 14 + 14 + 15 + 8 + 10 + 3 + 15 = 91
To increase his average score to 13 points, we need to find out how many points he needs to have a total of 9 games with an average score of 13.
To do this, we can use the formula:
(91 + x) / 9 = 13
where x is the number of points Lee needs to score in his next game.
Multiplying both sides by 9, we get:
91 + x = 117
Subtracting 91 from both sides, we get:
x = 26
Therefore, Lee needs to score 26 points in his next game to increase his average score to 13 points.