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
C = 4.5*4 - 7 = $11.
To find out how much you pay to buy 4 containers of orange juice, we need to substitute x=4 into the function f(x)=4.50x-7.
f(4) = 4.50(4) - 7
= 18 - 7
= 11
Therefore, you would pay $11 to buy 4 containers of orange juice. So the correct answer is b. $11.
To find out how much you pay to buy 4 containers of orange juice, you need to substitute the value of x as 4 into the function f(x)=4.50x-7.
So, we have:
f(4) = 4.50(4) - 7
To calculate it step by step:
f(4) = 4.50 * 4 - 7
= 18 - 7
= 11
Therefore, you would pay $11 to buy 4 containers of orange juice.
The correct answer is b. $11.