Question An account is opened with an initial deposit of \( \$ 700 \) and earns \( 3.3 \% \) interest compounded semi-annually. What will the account be worth in 3 years? Round your answer to the nearest cent. Do NOT round until you have calculated the final answer.
Solución de tutoría real
Responder
Solución
Revisado y aprobado por el equipo de tutoría de UpStudy
Beyond the Answer
To calculate the future value of an account with compound interest, you can use the formula: \[ A = P \left(1 + \frac{r}{n}\right)^{nt} \] where: - \( A \) is the amount of money accumulated after n years, including interest. - \( P \) is the principal amount (the initial deposit). - \( r \) is the annual interest rate (decimal). - \( n \) is the number of times that interest is compounded per year. - \( t \) is the number of years the money is invested or borrowed. Given: - \( P = 700 \) - \( r = 0.033 \) (which is \( 3.3\% \)) - \( n = 2 \) (since interest is compounded semi-annually) - \( t = 3 \) Plugging in the values: \[ A = 700 \left(1 + \frac{0.033}{2}\right)^{2 \times 3} \] \[ A = 700 \left(1 + 0.0165\right)^{6} \] \[ A = 700 \left(1.0165\right)^{6} \] Calculating \( (1.0165)^6 \): \[ (1.0165)^6 \approx 1.10530 \] Now substituting back: \[ A \approx 700 \times 1.10530 \approx 773.71 \] Therefore, the account will be worth approximately \( \$ 773.71 \) after 3 years.