Please solve questions 1-5 and provide work !

1. The B\&N book store sells the OM book. Fixed cost is $20,000 per year, the variable cost per unit is $10, and The selling price per unit is $12. How many units should be required on sales to realize a profit o $50,000 ? 2. A Lee's store has fixed costs of $100,000 per year, variable cost of $10 /unit, an annual revenue of $300,000 at a volume of 6,000 units. What is the break-even volume (units)? 3. Process X has a fixed cost of $20,000 per year and a variable cost of $12 per unit, whereas Process Y has fixed cost of $10,000 per year and variable cost of $22 per unit. At what production quantity (Q) are the total cost of X and Y equal? 4. Fixed costs are $20,000 per year, the variable cost per unit is $10, and the selling price per unit is $20. What price must each book be sold to obtain a yearly profit of $20,000. Assuming that an estimated demand is the sume amount at the breakeven. 5. LEE's Publishing Company intends to publish a textbook in Operations Management. Fixed costs are $40. 000 per year, variable costs per unit are $10, and the selling price per unit is $12. Give your answers to the following questions. What variable cost per unit would result in $30,000 annual profits if annual sales are 20,000 units