Answer
a. y= 24,000 -3000x
b. 5 years
Work Step by Step
y= 24,000 -3000x
9000=24,000-3000x
-15000 = -3000x
x=$\frac{-15000}{-3000}$
x=5
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 P - Section P.8 - Modeling with Equations - Exercise Set - Page 123: 7
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