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 - Chapter Review Exercises: 35

Answer

It costs 13 dollars to power holiday lights for 6 hours.

Work Step by Step

Since the number 6 is inside the parentheses, this means it is a value for h. For this function, h represents the number of hours a day holiday lights are used. For this function E(h) represents the cost of the electricity to power the holiday lights. It is given that the function value equals 13 when h equals 6. Therefore this can be interpreted as "It costs 13 dollars to power holiday lights for 6 hours."
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