help with these 3 problems please!

Required information [The following information applies to the questions displayed below] Michael is single and 35 years old He is a participant in his employer's sponsored retirement plan. How much can Michael contribute to a Roth IRA in 2019 in each of the following alternative situations? (Leave no answer blank. Enter zero if applicable.) a. Michael's AGI before the IRA contribution deduction is $53,500. Michael contributed $2,800 to a traditional IRA. Contribution to Roth IRA Required information [The following information applies to the questions displayed below] Michael is single and 35 years old. He is a participant in his employer's sponsored retirement plan. How much can Michael contribute to a Roth IRA in 2019 in each of the following alternative situations? (Leave no answer blank. Enter zero if applicable.) b. Michael's AGI is $83,500 before any IRA contributions. Contribution to Roth IRA Required information The following information applies to the questions displayed below.) Michael is single and 35 years old. He is a participant in his employer's sponsored retirement plan. How much can Michael contribute to a Roth IRA in 2019 in each of the following alternative situations? (Leave no answer blank. Enter zero if applicable.) c. Michael's AGI is $130,500 before any IRA contributions Contbution to Roth IRA