please explain the steps!

(Note: a slight twist here, as all cash flows are costs...that is, negative.) In a fitness push and to help control student health care costs, UNO has asked students to use fitness trackers. A student committee must choose which ones to purchase, and the student leadership has turned to you based on your business acumen. "Abacus" trackers cost $250 upfront, then $75 per year to maintain. They will last four years. "BA2Plus" trackers will cost $475 upfront and $80 per year to maintain, but they will last nine years. Assuming the university must replace them when they wear out, which tracker is the best choice (i.e., most cost effective)? Use a T-bond rate of 3.0% to justify your answer with numbers. Hint: use the EAA methodology to solve this problem. Best choice: EAA of best choice