Answer
$(-\infty, -0.4]$
Work Step by Step
The set {$x | x\leq-0.4 $} written in interval notation is $(-\infty, -0.4]$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 2 - Section 2.4 - Linear Inequalities and Problem Solving - Vocabulary, Readiness & Video Check - Page 84: 7
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