Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - Chapter 1 Review Problem Set: 40

Answer

$20,602$ feet

Work Step by Step

Finding the difference in elevation means that the higher elevation must be subtracted by the lower elevation. The higher elevation is $20320$ feet above sea level, and the lower elevation is $282$ feet below sea level. This second value can be expressed as $-282$ in the calculation, since the numbers are relative to sea level. Thus: $20320 - (-282) = 20602$ feet
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