Answer
30
Work Step by Step
Multiply two numbers at a time from left to right. Two numbers with opposite signs have a negative product while two numbers with the same sign have a positive product.
$-3(-2)(-5)(-1)$
$6(-5)(-1)$
$-30(-1)=30$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 1 - Section 1.7 - Multiplication and Division of Real Numbers - Exercise Set - Page 84: 28
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