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: 11

Answer

124 units

Work Step by Step

(a) The total profit is equal to the revenue minus the cost. Thus, the total profit function is: $$ 25x-3100$$ (b) The break even point is where the revenue and costs are equal: $$40x=15x+3100 \\ x=124$$

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