Which of these graphs represents a function? Please help

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

What is this inequality notation? t is less then or equal to 2

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180