Through using the high-low method, Regency Hotels estimates the total costs of providing room service meals to amount to $5,950 per month, plus 30 percent of room service revenue. Required: (a) What is the contribution margin ratio of providing room service meals? (Omit the "%" sign in your response.) Contribution margin ratio 70% (b) What is the break-even point for room service operations in terms of total room service revenue? (Omit the "$" sign in your response.) Break-even point $ (c) What would you expect to be the total cost of providing room service in a month in which room service revenue amounts to $15,000? (Omit the "$" sign in your response.) Total Cost $