Han has 10 cubes, every 5 inches on aside. Which expression shows the total volume of Han's cubes? *Choose All That Apply* (a) (10⋅5)^3

(b) 10⋅5^3

(c) 5⋅5⋅10

(d) (10⋅5)^2

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

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

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.