Answer
$x\leq -5$
Work Step by Step
By dividing both sides of the inequality $-4x\geq 20$ by $-4$, we have
$$
-4x\geq 20\Longrightarrow x\leq -5
.$$
See the figure below.
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Appendix C - Simple Inequalities - Exercise - Page 582: 27
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