For the polynomial $$p(x) = 3x^4 - 5x^3 + 2x^2 - 7x + 4$$ , ...

Question Analysis
This problem tests the ability to count the number of sign changes in the sequence of coefficients of a polynomial.

Key Concept Explanation
The number of sign changes in the sequence of coefficients is crucial for applying Descartes' Rule of Signs.

Step-by-step Solution
1. Identify the sequence of coefficients: 3, -5, 2, -7, 4
2. Count the sign changes: From 3 to -5 (1 chan...