$($Solving for n with$$ non$-$annual periods$)$Approximately how many years would it take for an investment to grow twofold if it were invested at $12$ percent compounded semiannually$?$ Assume that you invest $$$$1$ today.

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Part $1$

If you invest $$$$1$ at $12$ percent compounded semiannually$,$ about how many years would it take for your investment to grow twofold to $$$$2?($Hint$$: Remember to convert your calculator solution to$$ years.$)$

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enter your response here years$\_\_\_\_\_\_\_\_($Round to one decimal$$ place.$)$