It seem like there are information missing on the question posted. Let me answer this question with all I know. So here is what I believe the answer is, <span>GK¯¯¯¯¯¯</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
It would be 30 students from his class roster because not every kid would have his math class in the other options.
Answer:
The vertex is (-3,-2)
The vertex is basically the very top or very lowest, so you will notice how values around (-3,-2) are relatively the same in the y coordinate, but -2 is the "highest/lowest" so that's how you know it's a vertex.
If you try picturing the points in your head, you will see it make a U and at the bottom of the U is the vertex.