18. LO.2, 7 In 2021, Madden, who is single, has adjusted gross income of $145,200, uses the standard deduction of $12,550, and has $132,650 of taxable income.

Compute the following for Madden.

a. Federal income tax liability using the appropriate Tax Rate Schedule.

b. Statutory tax rate(s).

c. Marginal tax rate.

d. Average tax rate.

e. Effective tax rate, using adjusted gross income.