Abelita and Franco had great service during the meal. They would like to tip the server 20 percent. Which of these expressions would find the total bill, including tax and gratuity? Check all that apply.

A 20% tip is 0.2 times the bill, so the tip is (0.2)(11.72). To find the total including the tip, add it to $11.72, as in choice C. Equivalently, the total is 120% of the bill, or (1.2)(11.72), as in choice D.

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