The type of function that describes f(x) is polynomial. Option C
A polynomial graph function is simply described as a type of function used to represent a quadratic equation.
The graph of a quadratic function is a parabola, which has a U-shape. The direction and width of the parabola depend on the coefficient.
The vertex of the parabola represents the maximum or minimum point of the function, depending on whether the parabola opens upward or downward, respectively.
Note that quadratic functions are widely used in various fields, including physics, engineering, economics, and many more, to model relationships involving quantities that exhibit a curved, nonlinear behavior.