Oil prices are projected to increase by 75% by next May. A quart of oil currently costs $2.15. What is the projected cost of a gallon of oil next May? Round your answer to the nearest hundredth. After eating dinner at a restaurant, Sid's bill before tax is $62.00. The sales tax rate is 8%. Sid decides to leave a 15% tip for the waiter based on the pre-tax amount. How much money will Sid pay total, including tax and the tip?