College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.1 - Modeling the Real World with Algebra - P.1 Exercises: 12


Answer: A). Please check the attachment. B). No of Arizonas x = 3000 Arizonas

Work Step by Step

Here, Number of Gallons of water used by arizonas each day is W = 40x where x = number of Arizonas. A). By putting 0, 1000, 2000, 3000, 4000, 5000 as number of arizonas in the given equation, we get answer as 0, 40000, 80000, 120000, 160000, 200000 gallons used per day respectively. B). Here W = 120000 gallons per day i.e. 120000= 40x i.e. x = $\frac{120000}{40}$ = 3000 Arizonas
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