Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 3 - Introduction to Graphing - 3.4 Rates - 3.4 Exercise Set: 40

Answer

$\frac{1}{30}$ gallons of gasoline per mile driven This is around $0.033$ gallons of gasoline per mile driven.

Work Step by Step

After driving 60 miles, the car has consumed 2 gallons of gasoline. After driving 300 miles, the car has consumed 10 gallons of gasoline. The increase in gasoline consumed is: $=10-2=8$ gallons The increase in distance driven is $=300 - 60=240$ miles driven Thus, the average rate is: $=\dfrac{8\text{ gallons of gasoline}}{240 \text{ miles driven}}=\frac{1}{30}$ gallons of gasoline per mile driven
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