Help please I will give you ten points because I don't have much

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Need on this geometry question. explain how you did it.