College Algebra 7th Edition

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

Chapter P, Prerequisites - Section P.9 - Modeling with Equations - P.9 Exercises: 21

Answer

$400$ miles

Work Step by Step

Total cost of renting the truck is: $C=65*d+0.20*m$, where $d$=days rented and $m$=miles driven. For Michael, the cost is \$275 for 3 days: $275=65*3+0.2*m$ We solve for $m$: $m=(275-65*3)/0.2=80/0.2=400$ miles
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