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The question in the image asks:

**"If you invest $45,000 at an annual rate of return of 11%, using the Rule of 72, how many years will it take to double?**

**Round your answer to the nearest whole number."**

The **Rule of 72** is a simplified formula to estimate how long it will take for an investment to double at a given annual rate of return. The formula is:

\[
\text{Years to double} = \frac{72}{\text{Annual Rate of Return (\%)}}
\]

### Given:
- Annual rate of return = 11%

### Solution:
Using the Rule of 72 formula:

\[
\text{Years to double} = \frac{72}{11} \approx 6.55
\]

Rounding to the nearest whole number, it will take approximately **7 years** for the investment to double.

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If you invest $45,000 at an annual rate of return of 11%, using the Rule of 72, how many years will it take to double? Round your answer to the nearest whole number.

Learn how to calculate the time it takes for an investment to double using the Rule of 72. With an 11% annual return, this investment problem highlights essential financial concepts for high school students in grades 9-12.

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