9)If you invest $19,000 at an annual rate of return of 6%, using the Rule of 72, how many years will it take to double? Round your answer to the nearest whole number.

1. The Rule of 72 states that to find the number of years required to double an investment at a given annual rate of return, you divide 72 by the annual rate of return.
2. Given: annual rate of return = 6%
3. Applying Rule of 72:
\text{Years to Double} = \frac{72}{\text{Annual Rate}}
\text{Years to Double} = \frac{72}{6}
4. Simplify the expression:
\text{Years to Double} = 12

Final Answer:
\text{12 years}