-Ready Solve Percent Problems, Part 1 Quiz - Level G - Susannah is buying lunch for her friends at a restaurant. The bill is $50, and she wants to leave an 18% tip. Let p equal the total amount Susannah pays. Which equation can you use to find p? p = 50+ 0.18(50) p=50-18 p = 50+18 p=50-0.18(50)​