A family went out to dinner, and their food and beverage total $51.39. 6% sales tax is added to their bill,and then they plan to leave a 15% tip.what will the total cost of their bill be?
51.39*(1+.06+.15) = ____
That's if they don't include the tax before tipping. If they tip on the meal+tax, then
51.39*1.06 * 1.15 = _____