please help

11. You are catering a wedding for 500 people. You predicted that each guest will have two 6 ounce glasses of wine. The wine is purchased at $95.00 per case with 9 liter bottles to a case. 1 liter is 33.8 ounces 1. How many bottles of wine do you need? 2. How many cases is that? 3. Total drink cost per guest is = 4. Selling price for a drink is $8.50. What is the beverage cost percentage per serving of 6 oz