You can lease a car for 5 years by paying $5,000 today and then making lease payments of $350 per month

You can lease a car for 5 years by paying $5,000 today and then making lease payments of $350 per month (starting next month) for 5 years. Or you can buy the car now for $30,000 and then in 5 years sell the car for $18,000 Either way you have use of the car for 5 years. If your investments earn 5.00% APR (compounded monthly) which alternative is cheaper and by how much in present value terms?

You can purchase an appliance (refrigerator, furnaces, A/C, etc.) maintenance contract. You can pay $1,000 today for a year

You can purchase an appliance (refrigerator, furnaces, A/C, etc.) maintenance contract. You can pay $1,000 today for a year's maintenance coverage or pay $90 per month, each month, starting today, for 12 months. If your investments earn 5.00% APR (compounded monthly), how much would you save or would it cost you (in present value terms) to pay on a monthly basis?