Question
The formula for continuously compounded interest is given by \( A=P e^{r t} \), where \( A \) is the account balance, \( P \) is the principal, \( r \) is the annual interest rate (expressed as a decimal), and \( t \) is the time in years. If \( \$ 5000 \) is deposited into an account earning an annual interest rate of \( 2.5 \% \), compounded continuously, then what is the account balance after 8 years? Round your answer to the nearest dollar and do not include the \( \$ \) symbol in your answer.
Ask by Johnson Chan. in the United States
Jan 23,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
The account balance after 8 years is $6107.
Solution
To find the account balance after 8 years with continuously compounded interest, we can use the formula for continuously compounded interest:
\[ A = P e^{r t} \]
Given:
- Principal (\( P \)) = $5000
- Annual interest rate (\( r \)) = 2.5% = 0.025
- Time (\( t \)) = 8 years
Substitute the given values into the formula:
\[ A = 5000 e^{0.025 \times 8} \]
Now, we can calculate the account balance after 8 years using the formula.
Calculate the value by following steps:
- step0: Calculate:
\(5000e^{0.025\times 8}\)
- step1: Multiply the numbers:
\(5000e^{0.2}\)
- step2: Convert the expressions:
\(5000e^{\frac{1}{5}}\)
- step3: Rewrite the expression:
\(5000\sqrt[5]{e}\)
The account balance after 8 years with continuously compounded interest is approximately $6107.01.
Therefore, the account balance after 8 years is $6107.
Reviewed and approved by the UpStudy tutoring team
Like
error msg
Explain
Simplify this solution
The Deep Dive
To calculate the account balance after 8 years with continuously compounded interest, we can plug the values into the formula \( A = P e^{r t} \). Here, - \( P = 5000 \) - \( r = 0.025 \) (2.5% expressed as a decimal) - \( t = 8 \) Now, substituting the values: \[ A = 5000 \cdot e^{0.025 \cdot 8} \\ A \approx 5000 \cdot e^{0.2} \\ A \approx 5000 \cdot 1.2214 \\ A \approx 6107 \] So the account balance after 8 years is approximately 6107.