Answer:
4 x
Step-by-step explanation:
3.2 x = 320,000,000
320,000,000 ÷ 80 = 4,000,000
4,000,000 = 4 x
The answer to the problem is 1/2
2.2
I did it on khan
= 7.5x-8
Total cost = cost per yard * yard of fabric - coupon
total cost = 7.5 x - 8
y = 7.5x-8