Mu$$strame c$$mo resolver Future value$$You have $$$$900$ to invest. If you can earn $10\%$interest$,$ about how long does it take for your $$$$900$ investment to grow to $$$$1,800?$ Suppose the interest rate is just half$$ that, at $5\%.$ At half the interest$$ rate, does it take exactly twice as long to double your$$ money? Why or why$$ not? How long does it$$ take?

If the annual interest rate is $10\%,$ the number of years it takes to double your money is

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enter your response here years.$($Round to two decimal$$ places.$)$