10. 15.00
11.C
13.C
for 10 just add all the numbers together for each person like 3.00 4 time because there is 4 people and then 1.50 2 time because there are 2 people.
First we have to find 18% of $55.82, which we can do by using the equation 55.82 x 0.18
55.82 x 0.18 = 10.05
so the tip = $10.05
now we just add it to the original bill
55.82 + 10.05 = 65.87
so the total cost = $65.87
Answer: its C
Step-by-step explanation: