a. Purchase the machine it is currently renting for $165,000. This machine will require $21,000 per year in ongoing maintenance expenses. $35,000 will be spent upfront training the new operators of the machine. NPV will be negative, and represents the PV of the costs of the machine in each case. The NPV of renting the machine is 9 (Round to the nearest dollar. Enter a negative NPV as a negative value.)