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Set up the formula to find the balance after 8 years for a total of \( \$ 12,000 \) invested at an annual interest rate of \( 9 \% \) compounded continuously. \( A=12,000\left(1+\frac{9}{365}\right)^{(365)(8)} \) \( A=12,000(e)^{(0.09)(8)} \) \( A=12,000\left(1+\frac{0.09}{365}\right)^{(365)(8)} \) \( A=12,000(e)^{(9)(8)} \)

Ask by Brewer Barnett. in the United States
Jan 25,2025

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Tutor-Verified Answer

Answer

The balance after 8 years is calculated using the formula \( A = 12,000 \times e^{0.09 \times 8} \), which equals approximately \$24,653.20.

Solution

To find the balance after 8 years for a total of $12,000 invested at an annual interest rate of 9% compounded continuously, we can use the formula for continuous compounding: \[ A = P \times e^{r \times t} \] Where: - \( A \) is the balance after \( t \) years, - \( P \) is the principal amount (initial investment), - \( r \) is the annual interest rate, - \( t \) is the time in years. Given: - \( P = \$12,000 \) - \( r = 9\% = 0.09 \) - \( t = 8 \) years Substitute the values into the formula: \[ A = 12,000 \times e^{0.09 \times 8} \] \[ A = 12,000 \times e^{0.72} \] Now, we can calculate the balance after 8 years using the formula. Calculate the value by following steps: - step0: Calculate: \(12000e^{0.72}\) - step1: Convert the expressions: \(12000e^{\frac{18}{25}}\) - step2: Rewrite the expression: \(12000\sqrt[25]{e^{18}}\) The balance after 8 years for a total of $12,000 invested at an annual interest rate of 9% compounded continuously is approximately $24,653.20.

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To find balance after 8 years for an investment with continuous compounding, you will need to use the formula: \( A = Pe^{rt} \), where \( P \) is the principal amount (\$12,000), \( r \) is the annual interest rate (0.09), and \( t \) is the time in years (8). Plugging in the numbers, the formula becomes \( A = 12,000 e^{(0.09)(8)} \). Imagine how people have leveraged this kind of compounding in real life! Think about retirement funds or education savings plans where money in accounts grows exponentially over time. This strategy takes advantage of the “snowball effect,” where interest is earned on both the initial investment and the interest that accumulates. With 9% compounded continuously, that $12,000 can transform into a significantly larger sum, helping to turn dreams into reality.

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