1. **State the problem:** We want to find the initial amount $P$ to invest now at an interest rate of 6% per year, compounded continuously, so that the investment grows to $2500 in 5 years.
2. **Formula used:** The formula for continuous compounding is $$A = Pe^{rt}$$ where:
- $A$ is the amount after time $t$
- $P$ is the initial principal (what we want to find)
- $r$ is the annual interest rate (as a decimal)
- $t$ is the time in years
- $e$ is Euler's number (approximately 2.71828)
3. **Plug in known values:**
$$2500 = P e^{0.06 \times 5}$$
4. **Simplify the exponent:**
$$2500 = P e^{0.3}$$
5. **Solve for $P$ by dividing both sides by $e^{0.3}$:**
$$P = \frac{2500}{e^{0.3}}$$
6. **Show cancellation step:**
$$P = 2500 \times \frac{1}{e^{0.3}} = 2500 \times e^{-0.3}$$
7. **Calculate $e^{0.3}$ without rounding intermediate steps:**
Using a calculator, $e^{0.3} \approx 1.349858807576003$
8. **Calculate $P$ exactly:**
$$P = \frac{2500}{1.349858807576003} \approx 1852.322289$$
9. **Round to nearest cent:**
$$P \approx 1852.32$$
**Final answer:** The initial amount to invest is **1852.32**.
Continuous Compounding 5A8D0A
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