According to the Original Tipping Page, www. tipping. org, it is appropriate to tip waiters and waitresses 15%dash20% of the pre-tax restaurant bill. The Leeseburgs' dinner costs $ 49.25 before tax, and the tax rate is 7 %. a) What is the tax on the Leeseburgs' dinner? b) If the Leeseburgs decide to tip 16% of the pre-tax bill, how much is the tip? c) What is the total cost of the dinner including the tax and tip?