NEED answer soon. just the 4 letters thankss

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.

Which equation represents the partial sum of the geometric series?

Find the values of y: 3y^3(y^2+ 2/3y)=0