Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.1 - Algebraic Expressions, Mathematical Models, and Real Numbers - Exercise Set - Page 17: 18

Answer

$30°C$

Work Step by Step

Start with formula: $C=\frac{5}{9}(F-32)$. Plug in $86$ for $F$: $C=\frac{5}{9}(86-32)$. Simplify to solve for C: $C=\frac{5}{9}(54)=30$.
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