Long-Term Investments This exercise is based on the following table, which lists interest rates on long-term investments (based on 10-year government bonds) in several countries in 2014. Country U.S. Australia Japan Germany Brazil Yield 2.5% 0.5% 1.0% 3.5% 4.2% If the Interest on a long-term U.S. Investment is compounded continuously, how long will it take the value of an investment to double? (Give the answer correct to two decimal places.)