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: 9

Answer

t is the input (the year) with years as the units. T is the output (amount of taxes) with dollars as the units. This is a function.

Work Step by Step

We know that t is the input because it is inside the parentheses. T is the output because it is the "coefficient" of the parentheses. The units of years and dollars are both given in the problem. This is a function because there can only be one quantity of taxes that you've paid in any given year.
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