Martin is married (spouse does not work), two dependents who are under the age of 17 . What is his federal income tax withholding under the following conditions? Assume that Martin has only one job or that step 2 of Form W-4 is not checked. Also, his employer uses the percentage method table for a manual payroll. Use percentage method tables for a manual payroll systems. Required: a. Martin is paid semimonthly, and his gross pay is $4,160 per paycheck. b. Martin is paid monthly, and his gross pay is $8,140 per paycheck. c. Martin is paid weekly, and his gross pay is $6,190 per paycheck. (For all requirements, round your intermediate computations and final answers to 2 decimal places.) Henry, who earned $128,400 during 2020 , is paid on a monthly basis, is married, (spouse does not work) and two dependents who are under the age of 17. Assume that Henry has only one job or that step 2 of Form W-4 is not checked. Also, his employer uses the percentage method table for an automated payroll system. Use percentage method tables for automated systems. Required: a. What is Henry's federal tax withholding for each pay period? b. What is Henry's FICA withholding for each pay period? (For all requirements, round your intermediate computations and final answers to 2 decimal places.)