College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 5 - Summary, Review, and Test - Cumulative Review Exercises (Chapters 1-5) - Page 587: 14

Answer

$7 \gt x$; where $x\ne 1$ OR ($7 \gt x \gt1$) U ($1\gt x)$

Work Step by Step

$$\frac{x + 5}{x - 1} \gt 2$$ First, we identify the vertical asymptotes by equaling the denominator to zero: $$x - 1 \ne 0$$ $$x \ne 1$$ Then, we solve for $x$: $(x + 5) \gt 2(x - 1)$ $x + 5 \gt 2x - 2$ $5 + 2 \gt 2x - x$ $7 \gt x$; where $x\ne 1$ and the domain can be expressed as: Domain: {$x | (7 \gt x \gt1$) U ($1\gt x)$}.
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