Use the balanced scale to find the conversion factor that can be used to convert the number of blocks to the weight of the blocks in pounds. Balanced scale has 3 one-pound weights on 1 side; 2 question mark weights on other side.

A. 1.5 pounds per block

B. 1.5 blocks per pound

C. 2 pounds per block

D. 3 blocks per 2 pounds

A. 1.5 pounds per block

Step-by-step explanation:

The conversion factor shows 2 blocks on the right and three 1 pound blocks on the left. It takes two 1 pound blocks to make 2 and then you get your 3rd block, making it 3 (.5 more than 2.5) needing another block to add a .5

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

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