Compound Interest 5C2A05
1. **State the problem:** Bryn takes out a loan of 800 pounds with a compound interest rate of 28% per year. We need to find how much Bryn will owe after 14 years.
2. **Formula used:** The compound interest formula is $$A = P \left(1 + \frac{r}{100}\right)^t$$ where:
- $A$ is the amount owed after $t$ years,
- $P$ is the principal amount (initial loan),
- $r$ is the annual interest rate (in percent),
- $t$ is the time in years.
3. **Substitute the values:**
$$P = 800, \quad r = 28, \quad t = 14$$
4. **Calculate the amount:**
$$A = 800 \left(1 + \frac{28}{100}\right)^{14} = 800 \times (1.28)^{14}$$
5. **Evaluate the power:**
Calculate $(1.28)^{14}$ using a calculator or approximation:
$$(1.28)^{14} \approx 37.699$$
6. **Multiply to find the final amount:**
$$A = 800 \times 37.699 = 30159.2$$
7. **Round to the nearest penny:**
Bryn will owe approximately 30159.20 pounds after 14 years.
**Final answer:**
$$\boxed{30159.20}$$