20.
Identify the vertex of the parabola.
A. (2, 7)
B. (4, 3)
C. (6, 7)
D. (3, 4)
![20 Identify the vertex of the parabola A 2 7 B 4 3 C 6 7 D 3 4 class=](https://us-static.z-dn.net/files/d0e/546031bf3a72fe342d32f1cf1f3adea9.jpg)