In 2021, Zach is single with no dependents. He is not claimed as a dependent on anothers 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 intermediate 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 $5,500.

b. Zach is 29 years old and his AGI is $9,700.

c. Zach is 29 years old and his AGI is $17,900.

Zach is 17 years old and his AGI is $5,500.

EXHIBIT 8-11 2021 Earned Income Credit Table

Qualifying Children	(1) Maximum Earned Income Eligible for Credit	(2) Credit %	(3) Maximum Credit (1) (2)	(4) Credit Phase-Out for AGI (or earned income if greater) Over This Amount	(5) Phase-Out Percentage	No Credit When AGI (or earned income if greater) Equals or Exceeds This Amount (4) + [(3)/(5)]
Married taxpayers filing joint returns
0	$ 9,820	15.3%	$1,502	$14,820	15.3%	$24,637
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
0	$ 9,820	15.3%	$ 1,502	$ 11,610	15.3%	$21,427
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