In 2021, Zach is singie with no dependents. He is not claimed as a dependent on another's return. All of his income is from salary and he does not have any for AGI deductions. What is his earned income credit in the following alternative scenarios? Use Exhibit 8-11. (Round your Intermedlate and final answers to the nearest whole dollar amount. Round your final answer to the nearest whole dollar amount. Leave no answer blank. Enter zero If applicable.) a. Zach is 29 years old and his AGI is $5,100. b. Zach is 29 years old and his AGI is $9,500. EXHIBIT 8-1l 2021 Earned Income Credit Table No Credit When AGI (4) Credit Phase-Out for (1) Maximum Earned Income Eligible for Credit (3) Maximum AGI (or earned income Credit (or earned income if greater) Equals or Exceeds This Amount (5) Phase-Out Qualifying Children (2) Credit % if greater) Over This Amount (1) (2) Percentage (4) + [(3)/(5)] Married taxpayers filing joint returns $ 9,820 15.3% $1,502 $14,820 15.3% S24,637 1 10,640 34 3,618 25,470 15.98 48,108 2 14,950 40 5,980 25,470 21.06 53,865 3+ 14,950 45 6,728 25,470 21.06 57,414 All taxpayers except married taxpayers filing joint returns $9,820 15.3% $ 1,502 $ 11,610 15.3% S21,427 1 10,640 34 3,618 19,520 15.98 42,158 2 14,950 40 5,980 19,520 21.06 47,915 3+ 14,950 45 6,728 19,520 21.06 51,464