Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 2 - Cumulative Review: 41

Answer

79.2 years

Work Step by Step

Use the formula d = rt (distance = rate * time) and substitute the values given into the equation: 31,680 = 400t Solve for t by dividing both sides by 400: 79.2 = t
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