Question
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If an investment account starts with \( \$ 1,000 \), and grows with \( 5.2 \% \) interest, compounded every year, how much is the account worth after 10 years? Round your answer to the nearest dollar. Do NOT round until you calculate the final answer.

Ask by Tucker Colon. in the United States
Jan 24,2025

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Tutor-Verified Answer

Answer

After 10 years, the investment account will be worth \$1,660.

Solution

To determine the future value of an investment with compound interest, you can use the **Future Value (FV)** formula: \[ FV = PV \times (1 + r)^n \] Where: - \( PV \) = Present Value (initial investment) = \$1,000 - \( r \) = annual interest rate (in decimal) = 5.2% = 0.052 - \( n \) = number of years = 10 **Step-by-Step Calculation:** 1. **Convert the Interest Rate to Decimal:** \[ r = 5.2\% = \frac{5.2}{100} = 0.052 \] 2. **Apply the Future Value Formula:** \[ FV = 1000 \times (1 + 0.052)^{10} \] 3. **Calculate the Growth Factor \((1 + r)^n\):** \[ (1 + 0.052)^{10} = 1.052^{10} \] 4. **Compute \(1.052^{10}\):** While you can use a calculator for precision, here's an approximate step-by-step multiplication: \[ 1.052^{10} \approx 1.660216 \] 5. **Multiply by the Initial Investment:** \[ FV = 1000 \times 1.660216 = 1660.216 \] 6. **Round to the Nearest Dollar:** \[ FV \approx \$1,660 \] **Conclusion:** After **10 years**, the investment account will be worth **\$1,660** when rounded to the nearest dollar.

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The Deep Dive

Starting with an initial investment of \( P = 1000 \) and an annual interest rate of \( r = 0.052 \), we can use the compound interest formula: \[ A = P(1 + r)^t \] Where \( t = 10 \) years. Plugging in the values gives: \[ A = 1000(1 + 0.052)^{10} = 1000(1.052)^{10} \] Calculating \( (1.052)^{10} \) results in approximately \( 1.62889 \). Therefore, \[ A \approx 1000 \times 1.62889 \approx 1628.89 \] Rounding to the nearest dollar, the account is worth approximately \( \$ 1,629 \) after 10 years. For a little historical flair, did you know that compound interest, often described as the "eighth wonder of the world," was popularized by Albert Einstein? He supposedly praised compound interest as a powerful tool for wealth building, illustrating its potential to generate exponential growth over time. If you're considering investing, it's essential to avoid common mistakes, like not regularly reviewing your investment strategy or falling prey to emotional decision-making during market volatility. Setting up automated contributions can help keep your growth on track and minimize these pitfalls.

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