P13-2 Breakeven comparisons: Algebraic Given the price and cost data shown in the ac. companying table for each of the three firms, F, G, and H, answer the questions that follow. Firm Sale price per uni Variable operating cost per unit Fixed operating cost S 18.00 $ 21.00 $30.00 13.50 45,000 30,000 90,000 6.75 12.00 a. What is the operating breakeven point in units for each firm? b. How would you rank these firms in terms of their risk