Compute 2018 taxable income in each of the following independent situations.
a. Drew and Meg, ages 40 and 41, respectively, are married and file a joint return. In addition to four dependent children, they have AGI of $125,000 and itemized deductions of $27,000.
b. Sybil, age 40, is single and supports her dependent parents who live with her, as well as her grandfather who is in a nursing home. She has AGI of $80,000 and itemized deductions of $8,000.
c. Scott, age 49, is a surviving spouse. His household includes two unmarried stepsons who qualify as his dependents. He has AGI of $75,000 and itemized deductions of $10,100.