## Algebra 1

Published by Prentice Hall

# Chapter 4 - An Introduction to Functions - 4-5 Writing a Function Rule - Practice and Problem-Solving Exercises - Page 271: 17

11 dollars

#### Work Step by Step

In order to solve this problem, we plug four in for x, which represents the number of containers of orange juice that are bought. Thus, we obtain: $f(4)=4.5(4)-7 = 18-7=11$ dollars

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