Talisha invests​ $5,000 in each of 3​ investments: a city bond that pays​ 7.15% simple​ interest, a mutual fund that guarantees 6 and one half % interest compounded​ semi-annually, and a​ high-risk account with a return of​ 5.8% that compounds continuously. Which investment will be worth the most after 8​ years, assuming each account continues without​ incident?