Answer
No.
Work Step by Step
The relation is a not function because there is at least one shopping cost for which there belongs more than $1$ merchandise cost.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
2.1 Linear Equations and Functions - 2.1 Represent Relations and Functions - 2.1 Exercises - Problem Solving - Page 79: 50b
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