Question

Nancy is very happy with the service at the hotel she is staying in. She wants to tip the room service waiter 15 percent of the food bill, which is $120.75. How much should she tip

Answer 1

The expression is 120.75 * 15%

Answer 2

tip = % * cost

Answer 3

The tip will be 0.15 x 120.75 then you will get the tip cost (:
If you want to find the total including the food cost, you just add the tip cost and the food cost togteher.