Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 1 - Linear Functions - 1.7 Functions and Function Notation - 1.7 Exercises - Page 106: 2


a is the input with years as units. S is the output with dollars as units. This is not a function.

Work Step by Step

We know that a is the input because it is inside the parenthesis. S is the output because it is the coefficient of the parenthesis. The units of years for a and dollars for S are both given in the problem. This is not a function because for any one age, different people could have different salaries.
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