1. **State the problem:** We are given the population of Elmdale in 2010 and 2018 and need to find the continuous growth rate $r$ using the formula for continuous population growth:
$$N(t) = N_0 e^{rt}$$
where:
- $N(t)$ is the population at time $t$,
- $N_0$ is the initial population,
- $r$ is the growth rate,
- $t$ is the time in years since the initial measurement.
2. **Identify given values:**
- Initial population $N_0 = 34500$ (in 2010, so $t=0$)
- Population in 2018 $N(8) = 48665$ (since 2018 is 8 years after 2010)
- Time elapsed $t = 8$ years
3. **Write the formula with known values:**
$$48665 = 34500 \times e^{8r}$$
4. **Isolate the exponential term:**
$$\frac{48665}{34500} = e^{8r}$$
5. **Simplify the fraction:**
$$\frac{48665}{34500} \approx 1.4107$$
6. **Take the natural logarithm of both sides to solve for $r$:**
$$\ln\left(1.4107\right) = \ln\left(e^{8r}\right)$$
$$\ln\left(1.4107\right) = 8r$$
7. **Calculate the logarithm:**
$$\ln\left(1.4107\right) \approx 0.344$$
8. **Solve for $r$:**
$$r = \frac{0.344}{8}$$
$$r = \frac{\cancel{0.344}}{\cancel{8}} = 0.043$$
9. **Convert $r$ to a percentage and round to the nearest tenth:**
$$r \approx 4.3\%$$
**Final answer:** The continuous growth rate $r$ for Elmdale is approximately **4.3%** per year.
Population Growth F3B6A3
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