I need help figuring out what a and b are

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.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account