Facebook’s stock price in 2015 increased by 34.15%, and in 2016, it increased by 9.93%. Source: Data extracted from finance.yahoo.com, January 9, 2017. a. Compute the geometric mean rate of return per year for the twoyear period 2015–2016. b. If you purchased $1,000 of Facebook stock at the start of 2015, what was its value at the end of 2016? c. Compare the result of (b) to that of Problem 3.19 (b).