Your family went out to eat and the total bill was 68.50. if you leave a 15% tip, what is the total cost of the bill

$ 78.78

Step-by-step explanation:

Calculate 15% of 68.50. then add it to the total bill.

Your family went out to eat and the total bill was 68.50. The total cost of the bill is 78.775

Solution:

Given that family went out to eat and left a tip of 15%

Total bill paid by family = 68.50

Tip amount = 15% tip  

So the tip given by the family is given as  15% of 68.50

15% of 68.50 = = 10.275

Total cost of the bill = Total bill paid by family + tip amount = 68.50 + 10.275 = 78.775

Hence total cost of the bill of family is 78.775

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

no i do not : ( what is it?