Mr. and Mrs. Compton, ages 61 and 60, paid $9,280 of medical expenses that were not reimbursed by their private insurance provider. Compute the after-tax cost of these expenses assuming that:
a. The Comptons itemize deductions on their joint tax return, their AGI is $87,000, and their marginal tax rate is 25 percent.
b. The Comptons itemize deductions on their joint tax return, their AGI is $424,000, and their marginal tax rate is 33 percent.
c. The Comptons take the standard deduction on their joint tax return, their AGI is $39,000, and their marginal tax rate is 15 percent?