Answer:
You have a maximum when the parabola opens down (-x^2), and a minimum when it opens up (+x^2). In your case, it opens down because of the -. That is the special notation, the vertex of the parabola is already there.
Answer:
It would be 66
Step-by-step explanation:
Answer: 530.66 units²
<u>Step-by-step explanation:</u>

Answer:
you can add it up or multiply each number.
Step-by-step explanation that seem kinda hard.