At a restaurant If a party has eight or more people the gratuity is automatically added to the bill If x is the cost of the meal then the total bill C x with a 17 gratuity and an 8 sales tax is given by C x x 0 08x 0 1x Evaluate C 280 and interpret the meaning in the context of this problem Round to the nearest cent If the cost of the food is S then the total bill including tax and tip Is S X 3