Answer
$(0,\infty)$.
See graph.
Work Step by Step
Step 1. $2(x+4)+x\lt4(x+2) \longrightarrow 2x+8+x\lt 4x+8 \longrightarrow x\gt0$ or $(0,\infty)$.
Step 2. See graph.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 2 - Linear and Quadratic Functions - Section 2.8 Equations and Inequalities Involving the Absolute Value Function - 2.8 Assess Your Understanding - Page 183: 79
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