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 :_______%