Betson Enterprises distributes and markets the Big Buck video game, which allows players to "hunt" for elk, antelope, moose, and bucks without shivering outside in the cold. E-sports Entertainment in NYC purchased five machines for $6300 each and took in an average of $610 per week in sales. For a study period of 3 years,
(a) What was the nominal annual rate of return?
(b) What was the effective annual rate of return?