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.
Maybe you need to distribute it. -8y + 8
Answer:
Put the green dot at the coordinates (-3, -4). Find -3 on the x-axis and go 4 down.
Step-by-step explanation:
Just move the blue dot five to the left, then five to the left again.
Think of it as two rectangular prisms next to each other, and find the volume of each one separately.
The big one on the left has a volume of 4 * 12 * 6, or 288.
The smaller one on the right has a volume of 2 * 6 * 6, or 72.
288 + 72 = 360. 360 cubic feet of water are needed.
