\( \$ 1000 \) are deposited in an account with a \( 8.5 \% \) interest rate, compounded continuously. What is the balance after 5 years? \( \mathrm{P}=\$ 1000 \quad r=0.085 \quad \mathrm{t}=5 \) \( \mathrm{~F}= \) Pe \( ^{r t} \quad \mathrm{~F}=\$[?] \)
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The Deep Dive
To calculate the balance after 5 years with continuous compounding, we use the formula \( F = Pe^{rt} \). Plugging in the values, we have \( F = 1000 e^{0.085 \times 5} \). Evaluating it gives us \( F \approx 1000 e^{0.425} \approx 1000 \times 1.528 \approx 1528.43 \). Hence, the balance after 5 years will be approximately \( \$1528.43 \). This concept of continuous compounding really takes advantage of the exponential growth of investments! One fascinating aspect is that with continuous compounding, even a small increase in the interest rate can lead to a significantly higher balance over time. So, it’s a great reminder to always look for optimal interest rates when saving or investing.