Your firm is purchasing a new telephone systems that will last for four years. You can purchase the systems for an up-front cost of 150,000, or you can lease the system from the manufacturer for $4,000 paid at the end of each month. The lease price is offered for a 48-month lease with no early termination-you cannot end the lease early. Your firm can borrow at an interest rate of 6% APH with monthly compounding. Should you purchase the system outright or pay $4,000 per month? 13. a. $150,000 b. $170,000 c. $170,321.27 d. $140,137.55 e. $242,723.53