On the distant planet of Zurg, the stock market had a return last year of -60%. This year, due to an economic recovery, the stock market had a return of +100%. What was an investors effective annual return over this two-year period? If the investor requires an annual return of 10% to be happy, is the investor happy?

you must show supporting work, or describe the numbers you input to your calculator (i.e., enter PMT = 2000; i = 5%; n = 20. Solve for PV = ZZZ).