Algebra 2, functions???

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

What is the volume of this container?