# Chapter 8 - Systems of Linear Equations and Problem Solving - 8.8 Business and Economics Applications - 8.8 Exercise Set - Page 563: 14

125 units

#### Work Step by Step

(a) The total profit is equal to the revenue minus the cost. Thus, the total profit function is: $$80x-10,000$$ (b) The break even point is where the revenue and costs are equal: $$20x+10000=100x \\ x=125$$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.