1. **Problem Statement:** Determine the end behavior of the graphs of the given polynomial functions.
2. **Key Concept:** The end behavior of a polynomial function depends on the degree and the leading coefficient.
- If the degree is even and the leading coefficient is positive, the graph rises on both ends.
- If the degree is even and the leading coefficient is negative, the graph falls on both ends.
- If the degree is odd and the leading coefficient is positive, the graph falls to the left and rises to the right.
- If the degree is odd and the leading coefficient is negative, the graph rises to the left and falls to the right.
3. **(a) For** $f(x) = -x^4 + 2x^3 - 7x^2 + 3x$:
- Degree is 4 (even).
- Leading coefficient is $-1$ (negative).
- Therefore, the graph falls to the left and falls to the right.
4. **(b) For** $f(x) = 2x^5 - 8x^3 + 5x + 4$:
- Degree is 5 (odd).
- Leading coefficient is $2$ (positive).
- Therefore, the graph falls to the left and rises to the right.
5. **(c) For** $f(x) = -3(x - 1)(x + 5)^2$:
- Expand the factors to find degree and leading coefficient:
- $(x + 5)^2 = x^2 + 10x + 25$
- Multiply by $(x - 1)$: $x^3 + 10x^2 + 25x - x^2 - 10x - 25 = x^3 + 9x^2 + 15x - 25$
- Multiply by $-3$: $-3x^3 - 27x^2 - 45x + 75$
- Degree is 3 (odd).
- Leading coefficient is $-3$ (negative).
- Therefore, the graph rises to the left and falls to the right.
**Final answers:**
- (a) The graph falls to the left and falls to the right.
- (b) The graph falls to the left and rises to the right.
- (c) The graph rises to the left and falls to the right.
End Behavior
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