Lacy is a single taxpayer. In 2020, her taxable income is $42,000. What is her tax liability in each of the following alternative situations? Use Tax Rate Schedule, Dividends and Capital Gains Tax Rates for reference. (Do not round intermediate calculations.)

a. All of her income is salary from her employer.

b. Her $42,000 of taxable income includes $1,000 of qualified dividends.

c. Her $42,000 of taxable income includes $5,000 of qualified dividends. (Round your answers to 2 decimal places.)