Mark has been saving up for a $200 pair of sneakers. He has $120 so far. He just noticed that the sneakers he wants are on sale for 35% off. Does Mark have enough money if his mom tells him she will pay for tax? If not how much more money does he need to save?

Step-by-step explanation:

Mark has been saving up for a $200 pair of sneakers.

He just noticed that the sneakers he wants are on sale for 35% off. The value of 35% off the sneakers that he wants is

35/100 × 200 = 0.35 × 200 = 70

if his mom tells him she will pay for tax, then the amount that he has to pay for the sneakers is

200 - 70 = $130

He has $120. Therefore, he doesn't have enough money to buy the sneakers.

The amount that he needs to save is

130 - 120 = $10

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

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