Answer
$$x\leq -3$$
Work Step by Step
We write an expression that matches the shaded area on the graph. Note, if the dot on the edge of the shaded region is filled, then we included that point. Thus, we find:
$$x\leq -3$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 2 - Functions - 2.3 Piecewise-Defined Functions - Exercises and Problems for Section 2.3 - Skill Refresher - Page 88: S2
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