A12-pack of 8-ounce juice boxes cost $5.40 how much would an 18-ounce of juice boxes cost if it is a proportionate price? ?
a. $9.40 b. $8.10 c $3.60 d. $12.15

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

49%

step-by-step explanation:

when you realize that you dont know just realize i just took a test and im so smart

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15