Answer:
A. 2.56 & B. 15.37
Explanation:
To find the tip, multiply 12.81 by 20% (12.81*0.20) to get 2.562. Rounded to the nearest hundredth is 2.56.
From there, to get the total bill, add the bill with the tip (12.81+2.56) to get your answer of 15.37.
Hope this helps. Good luck with your studies!