Answer
$(-\infty, 4]$
Work Step by Step
The domain of the function $ f $ consists of all values for which $14-5x \geq -6$
$-5x \geq -20$
$\implies x \leq 4$
The above inequality can be written in the interval notation as:
$(-\infty, 4]$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 3 - Cumulative Review Exercises - Page 516: 7
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