Answer
$80-x$
Work Step by Step
Since $x$ represents the number of 20 dollar increases over 300 dollars, the
number of apartment units (N) that will be rented can be written as $N=80-x$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 1 - Equations and Inequalities - 1.5 Applications and Modeling with Quadratic Equations - 1.5 Exercises - Page 135: 57
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