Question 4 (25 pts) The chart shows how the monthly profit or loss of Tedueven Company changes with respect to month sales (revenue) amounts. Then, answer the following questions. 90,000 60,000 30,000 Profit Loss 0 $150,000 $300,000 $450,000 $600,000 $750,000 30,000 -80,000 -90,000 Sales (monthly) a) (10 pts) What is the company's break-even sales? b) (15 pts) What would be the value of break-even sales if the fixed cost increases by 20%, while everything else stays constant