Assuming a 21 percent marginal tax rate, compute the after-tax cost of the following business expenses: Required: a. $7,500 premium on business property and casualty insurance b. $3,100 fine paid for business entertainment c. $5,600 premium on key-person life insurance. d. $69,000 political contribution e. $9,700 client meals. (Round your final answers to the nearest whole dollar.) Amount a. b. c. After-tax cost After-tax cost After-tax cost After-tax cost After-tax cost d. e