Determine the amount of the Earned Income Credit in each of the following cases. Assume that the person or persons is/are eligible to take the credit. Calculate the credit using the formulas. (For all requirements, do not round intermediate calculations. Round your final answers to the nearest whole dollar amount.) Use Table 9.3 Earned Income Credit a. A single person with earned income of $7,554 and no qualifying children b. A single person with earned income of $22,500 and two qualifying children C.A married couple filing jointly with earned income of $34,190 and one qualifying child