7) (20 points) EmKay, Inc. has decided to purchase new equipment because of the increasing maintenance costs for the current machine. The current machine is based on older technology and has negligible market value. The purchase price of the new equipment is $500,000 and it is expected to last for 10 years. Its terminal salvage value is $50,000. Operating and maintenance (O&M) costs are estimated to be $20,000 for the first year. Thereafter, these O&M costs are expected to increase by $2,000 each year over the previous year's costs. MARR is 10% per year compounded annually. a) (12 points) Compute the present worth for this new equipment purchase. b) (8 points) If the annual O&M costs for the current machine are $75,000, would you support the decision to purchase this new equipment? Explain