Answer
$-7$
Work Step by Step
$5+4(-3) = -7$
The initial temperature is 5 degrees, so we write five. Since the temperature drops by 3 degrees each hour, we add -3, and since four hours pass, we multiply -3 by 4.
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.4 - Integers: Multiplication and Division - Problem Set 1.4 - Page 27: 91
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