You must decide whether to buy a new car for $18,000 or lease the same car over a three year period. under the terms of the lease, you can make a down payment of $1,000 and have monthly payments of $150. at the end of the three years, the leased car has a residual value of $12,000. assume you can sell the new car at the end of the three years at the same residual value. is it less expensive to buy or lease? what is the cost of leasing the car?