Milana is interested in buying a new car

Milana is interested in buying a new car. She has decided to borrow the money to pay the ?$20,000 purchase price of the car. She is in the 30?% income tax bracket. She can either borrow the money at an interest rate of 4?% from the car? dealer, or she could take out a second mortgage on her home. That mortgage would come with an interest rate of 8?%. Interest payments on the mortgage would be tax deductible for? Milana, but interest payments on the loan from the car dealer could not be deducted on? Milana's federal tax return.What is the? after-tax cost of borrowing from the car dealership? (Round to the nearest whole? percentage, and do not include percentage sign).What is the? after-tax cost of borrowing through a second mortgage? ? (Round percent to one decimal? place, and do not include percentage sign).In order to minimize the cost of borrowing, Milana should take the following loan ...