Help please **attachment**

Really need on these. i have no idea what to do

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 number line represents the solution set for the inequality -1/2 greater than or equal to 4