A remotely situated fuel cell has an installed cost of ?$3 comma 000 and will reduce existing surveillance expenses by ?$370 per year for ten years. The border security? agency's MARR is 8 ?% per year. a. What is the minimum salvage? (market) value after ten years that makes the fuel cell worth? purchasing? b. What is the fuel? cell's IRR if the salvage value is? negligible?