Answer:
We have to use the formule to calculate the vertex which is: V(-b/2a;4ac-b^2/4a)
A) y=x+7 where a=1 b=0 and c=7
By replacing we have: V(0;28/4) V(0;7)
B) y=-x where a=-1 b and c=0 so V(0,0)
As it stands, it's none of those. I believe you were going for the distance formula but copied it wrong.
The second proportion is correct and it will be 6 hours.
Answer: The best way to study is by getting flashcards or something to help you review stuff and the best way to get good grades is by studying, doing your homework, doing your classwork, extra credit any work can help you get good grades AND STUDY!
Step-by-step explanation:
