1. **State the problem:** We want to find the amount of money in an account after 25 years if 1600 dollars is deposited at an annual interest rate of 5.25%, compounded annually.
2. **Formula used:** The formula for compound interest is $$A = P \left(1 + \frac{r}{n}\right)^{nt}$$ where:
- $A$ is the amount of money accumulated after $t$ years, including interest.
- $P$ is the principal amount (initial money).
- $r$ is the annual interest rate (decimal).
- $n$ is the number of times interest is compounded per year.
- $t$ is the number of years.
3. **Given values:**
- $P = 1600$
- $r = 5.25\% = 0.0525$
- $n = 1$ (compounded annually)
- $t = 25$
4. **Substitute values into the formula:**
$$A = 1600 \left(1 + \frac{0.0525}{1}\right)^{1 \times 25} = 1600 \left(1 + 0.0525\right)^{25} = 1600 \times 1.0525^{25}$$
5. **Calculate the power:**
$$1.0525^{25} \approx 3.6533$$
6. **Calculate the amount:**
$$A = 1600 \times 3.6533 = 5845.28$$
7. **Final answer:** After 25 years, the account will have approximately **5845.28** dollars.
Compound Interest Be092D
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