Tom, single filing status, earned biweekly gross pay of $1,950. He participates in a cafeteria plan, to which he pays $70 during the period. On his 2021 W-4, Tom checked box 2c and he entered no other information in steps 3 and 4. a) Calculate Tom's federal income tax withheld using the 2021 W-4 wage-bracket method. b) Calculate Tom's federal income tax withheld using the 2021 W-4 percentage method