Last year, Norman made 10 free trows per game. This year he makes 12 free trows per game. What percent increase in the number of free trows he makes this year.

20%

Step-by-step explanation:

Given that:

Last year : number of free throws per game = 10

This year ; number of free throws per game = 12

Percentage increase in the Number of free throws he makes this year:

[(this year - last year) / last year] × 100%

[(12 - 10) / 10] * 100%

(2 / 10) * 100%

0.2 * 100%

20%

Hence, there was a 20% increase in the Number of free throws made this year.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer