Answer
$$p=9$$
Work Step by Step
We know that the equilibrium point is the intersection of the supply and demand functions. Thus, we find that the equilibrium point is:
$$ 60+9p=195-6p\\ 15p=135\\ p=9$$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 8 - Systems of Linear Equations and Problem Solving - Study Summary - Practice Exercises - Page 570: 14
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