Answer
${{\$}} 100$
Work Step by Step
We want to find the price $p$ for which
demand = supply
$-10p+1600=14p-800\qquad/+10p+800$
$2400=24p\qquad/\div 24$
$p=100$
Equilibrium phone price: ${{\$}} 100.$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 1 - Section 1.2 - Functions and Models - Exercises - Page 74: 40a
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