I’m not sure how to answer this question but I worked like to know why I got it wrong. My school is doing online stuff now so to corona virus

Formula for area of a circle is A = PI x r^2

Area of outside circle = 3.14 x 5^2 = 3.14 x 25 = 78.5

Area of inner circle = 3.14 x 2.5^2 = 3.14 x 6.25 = 19.625

Area of shaded region = outside circle - inner circle = 78.5 - 19.625 = 58.875 = 59 m

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

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

the answer for this question is 38