Assuming a 30 percent marginal tax rate, compute the after-tax cost of the following business expenses: a. $7, 500 premium on business property and casualty insurance. b. $3, 100 fine paid to Wisconsin for violation of a state law. c. $5, 600 premium on key-person life insurance. d. $69,000 political contribution. e. $9, 700 client entertainment. Northwest Company operates manufacturing facilities in Portland, Oregon, and Vancouver, Canada. In the current year, the Portland plant generated $3.1 million net domestic income, and the Vancouver plant generated $4.8 million net foreign income. Compute Northwest's current taxable income. (Enter your answer in dollars not in millions of dollars.) Firm B, a calendar year, cash basis taxpayer, leases lawn and garden equipment. During December, it received the following cash payments. To what extent does each payment represent current taxable income to Firm B? a. $624 repayment of a loan from an employee. Firm B loaned $600 to the employee six months ago, and the employee repaid the loan with interest. b. $700 deposit from a customer who rented mechanical equipment. Firm B must return the entire deposit when the customer returns the undamaged equipment. c. $10, 200 short-term loan from a local bank. Firm B gave the bank a written note to repay the loan in one year at 5 percent interest. d. $962 prepaid rent from the customer described in part b. The rent is $13 per day for the 74-day period from December 17 through February 28