Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 1 - Section 1.2 - Algebraic Expressions and Sets of Numbers - Exercise Set: 9

Answer

2000 miles

Work Step by Step

You are given the following: Speed of aircraft = 400 miles per hour $t$ = number of hours 400t = the distance traveled by the aircraft in $t$ hours You are told to find the distance traveled by the aircraft in 5 hours. Therefore, $t=5$. Since you have the expression for the distance traveled in $t$ hours, and you now have a value for $t$, you can plug in that value: $400t=400(5)$ And solve: $400\times5=2000$ And remember to include the unit, which in this case is miles.
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