Chapter 4 Quadratic Functions and Factoring - 4.1 Quadratic Functions in Standard Form - 4.1 Exercises - Skill Practice - Page 241: 45

A

We know that quadratic functions follow the form $y=ax^2+bx+c$, where $-\frac{b}{2a}$ is the x coordinate of the vertex. Since the function in problem 45 has a value of b of 0, its vertex must be at x=0. Thus, option A is correct.