Stephanie, age 42, is single and receives a salary of $58,000 this year. She has $6,800 of itemized deductions. She pays $2,000 of student loan interest and contributes $4,000 to a Roth IRA. Her employer contributes $2,000 to her pension plan and she matches it. She also contributes $1,000 to her flexible benefits plan. Her employer purchases $70,000 of group-term life insurance for her and health insurance at a cost of $4,000 to the company. She receives interest income from State of Arkansas bonds of $400 and wins $100 from scratch-off lottery tickets. Calculate Stephanies gross income, adjusted gross income, and taxable income by writing out the tax return formula for Stephanie. Next, compute Stephanies income tax liability, average, and marginal tax rates.