Jack, justin, daniel, and dylan went out to eat at chili's. they split a sampler as an appetizer for $14 and a pitcher of soda for $8. each person also had a meal that cost $10.99 per person. the cost of the sales tax that was added to their meal was $4.62. lastly, the boys wanted to leave their server a 20% tip. what was the sales tax rate on their meal?