Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 10 - Statistics - 10.2 Bar Graphs and Line Graphs - 10.2 Exercises: 19

Answer

550,000 gal

Work Step by Step

To find the increase in supreme unleaded gasoline sales from 2009 to 2013 We need to first find the amount of gasoline in each year from 2009 to 2013. In 2009 the supreme unleaded gasoline sale was 150,000 gal In 2010 it increase to 300,000 gal So difference between 2009 and 2010 = 300,000 gal - 150,000 gal = 150,000 gal now in 2011 it increases to 400,000 gal So difference between 2011 - 2010 = 400,000 - 300,000 = 100,000 gal Again in 2012 it increases to 650,000 gal Difference between 2012 and 2011 = 650,000 gal - 400,000 gal = 250,000 gal in 2013 it increases to 700,00 gal So difference = 700,000 gal - 650,000 gal = 50,000 gal Now the total increase = 150,000 + 100,000 + 250,000 + 50,000 = 550,000 gal Therefore the increase in supreme unleaded gasoline sales from 2009 to 2013 is 550,000 gal
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