An evil act. Hope this helps you!
Because it allows a person to voice their opinion about a situation and gives everyone the ability to have input
It would depend on how much you hurt your knee. If you broke it, it could take a long time, but if it was just a sprain, then it would be a short time.
Answer:

Explanation:
Given

Required
Determine the directrix
First, we express the equation in form:

Where the directrix is:

So, we have:

Rewrite as:

Multiply the right hand side by 4/4


By comparison:
and 



The directrix is calculated as:

So:

