Terry wants to tip 15% to the waiter at a restaurant this means he will multiply the cost by 0.15 if this meal costs 18.10 how much did he tip the waiter

just as the problem states, multiply the cost (18.10) by 0.15

18.10 * 0.15 = 2.72

 the tip was $2.72

i hope this is what you were looking for.

see attached graph