Louding Publishing is considering publishing books using an updated format. Louding plans to sell the new books for $12 each and expect variable costs of $2/book with fixed costs of $17,000. 1. How many books must Louding sell to break-even? 2. How many books must Louding sell to reach an operating profit of $15,000? Assuming Louding plans to sell 2.000 books per month 3. What will the operating profit be? 4. What would the impact on operating profit be if variable costs increased by 3%