Question
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\( \$ 3000 \) are deposited in an account with \( 9 \% \) interest rate, compounded continuously. What is the balance after 14 years? \( F=\$[?] \) Round to the nearest cent.

Ask by Greene Vega. in the United States
Jan 21,2025

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Tutor-Verified Answer

Answer

The balance after 14 years is \$10,576.18.

Solution

To calculate the future balance \( F \) after 14 years with continuous compounding, you can use the formula: \[ F = P \times e^{rt} \] where: - \( P = \$3000 \) (initial deposit) - \( r = 9\% = 0.09 \) (annual interest rate) - \( t = 14 \) years - \( e \) is the base of the natural logarithm (approximately 2.71828) **Step-by-Step Calculation:** 1. **Calculate the exponent:** \[ rt = 0.09 \times 14 = 1.26 \] 2. **Compute \( e^{1.26} \):** Using a Taylor series expansion or a calculator, \[ e^{1.26} \approx 3.52539 \] 3. **Calculate the future balance:** \[ F = 3000 \times 3.52539 \approx 10576.18 \] **Final Answer:** \[ F = \$10,\!576.18 \]

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To calculate the balance after 14 years with continuous compounding, you can use the formula: \[ F = Pe^{rt} \] where: - \( F \) is the future value of the investment/loan, including interest, - \( P \) is the principal investment amount (\$3000), - \( r \) is the annual interest rate (decimal) (0.09 for 9%), - \( t \) is the time the money is invested or borrowed for, in years (14), - \( e \) is the base of the natural logarithm, approximately equal to 2.71828. Plugging the values into the formula: \[ F = 3000 \times e^{0.09 \times 14} \] Calculating \( 0.09 \times 14 \): \[ 0.09 \times 14 = 1.26 \] Now, calculating \( e^{1.26} \): \[ e^{1.26} \approx 3.5291 \] Now plug back into the equation: \[ F \approx 3000 \times 3.5291 \approx 10587.30 \] So, the balance after 14 years would be approximately: \[ F = \$10587.30 \]

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