You are buying orange juice for $4.50 per container and have a gift card worth $7. The function f(x)=4.50x-7 represents your total cost f(x) if you buy x containers of orange juice and use the gift card. How much do you pay to buy 4 containers of orange juice?
a. $25
b. $11***
c. $9
d. $18
1 answer
C = 4.5*4 - 7 = $11.
10 answers