1. **State the problem:** We are given a population function $$f(x) = x^3 - x^2 - 4x + 4$$ where $$x$$ is the number of years from now. We need to find the population 8 years from now, i.e., find $$f(8)$$.
2. **Formula used:** To find the population at a specific year $$x$$, substitute $$x$$ into the function:
$$f(x) = x^3 - x^2 - 4x + 4$$
3. **Calculate $$f(8)$$:**
$$f(8) = 8^3 - 8^2 - 4(8) + 4$$
4. **Simplify step-by-step:**
$$8^3 = 512$$
$$8^2 = 64$$
So,
$$f(8) = 512 - 64 - 32 + 4$$
5. **Perform the arithmetic:**
$$512 - 64 = 448$$
$$448 - 32 = 416$$
$$416 + 4 = 420$$
6. **Final answer:** The population 8 years from now will be $$420$$.
Population Prediction
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