Answer
900 units
Work Step by Step
(a) The total profit is equal to the revenue minus the cost. Thus, the total profit function is:
$$ 55x-49,500$$
(b) The break even point is where the revenue and costs are equal:
$$85x=30x+49500\\ x=900$$
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 - 8.8 Business and Economics Applications - 8.8 Exercise Set - Page 562: 12
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