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 - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3 - Page 20: 121


The temperature at noon is $-3˚F$

Work Step by Step

$= (-17) + 14$ $= 14 - 17$ $= -3˚F$ The initial temperature at 5 AM is $-17˚F$; this temperature increased by $14˚F$, which is a positive number. Therefore, you add $(+14˚F)$ to $(-17˚F)$ to determine the temperature at noon.
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