1. **State the problem:** We are given the function $$P(x) = \frac{3000x - 160000}{x + 300}$$ and want to analyze it.
2. **Formula and rules:** This is a rational function where the numerator is $$3000x - 160000$$ and the denominator is $$x + 300$$. Important rules:
- The function is undefined where the denominator is zero.
- Simplify the expression if possible.
3. **Find domain restrictions:** Set denominator equal to zero:
$$x + 300 = 0 \implies x = -300$$
So, $$P(x)$$ is undefined at $$x = -300$$.
4. **Simplify the function:** Factor numerator if possible:
$$3000x - 160000 = 1000(3x - 160)$$
No common factor with denominator $$x + 300$$, so no simplification.
5. **Find intercepts:**
- **x-intercept:** Set numerator to zero:
$$3000x - 160000 = 0 \implies 3000x = 160000 \implies x = \frac{160000}{3000} = \frac{1600}{30} = \frac{160}{3} \approx 53.33$$
- **y-intercept:** Set $$x=0$$:
$$P(0) = \frac{3000 \cdot 0 - 160000}{0 + 300} = \frac{-160000}{300} = -\frac{160000}{300} = -\frac{1600}{3} \approx -533.33$$
6. **Behavior near vertical asymptote:** At $$x = -300$$, the function tends to infinity or negative infinity depending on the side.
7. **Horizontal asymptote:** Since degrees of numerator and denominator are equal (both degree 1), horizontal asymptote is ratio of leading coefficients:
$$y = \frac{3000}{1} = 3000$$
**Final answer:** The function $$P(x) = \frac{3000x - 160000}{x + 300}$$ has domain $$x \neq -300$$, x-intercept at $$x = \frac{160}{3}$$, y-intercept at $$y = -\frac{1600}{3}$$, vertical asymptote at $$x = -300$$, and horizontal asymptote at $$y = 3000$$.
Rational Function Analysis 8E3541
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