According to the Original Tipping Page, www.tipping.org, it is appropriate to tip waiters and waitresses 15%–20% of the pre tax restaurant bill. The Leesebergs’ dinner costs $63.50 before tax, and the tax rate is 6%.

a) What is the tax on the Leesebergs’ dinner?

b) If the Leesebergs decide to tip 15% of the pre-tax bill, how much is the tip?

c) What is the total cost of the dinner including the tax and tip?

Where appropriate, round your answer to the nearest tenth of percent.