For number 2 it's would be 12.8
Sorry I don't have time for number 3
Let's first rewrite it in vertex form.
Start by completing the square.
y = x² + 4x + 4 - 4 - 1
y = (x + 2)² - 5
(x + 2)² = y + 5
Now, 4a = 1; a =

So, the vertex form is (x + 2)² = 4(

)(y + 5)
So, we know that the vertex is at (-2, -5).
Since it's a concave up parabola, we just have to change the y-value to find the focus.
∴ F(-2, -5 +

)
F(-2,

)
I’m not for sure but if I had to guess I would say 115
The answer to this question is squaring of areas
1/36 because there are 6 sides and the you are trying to figure out what the probiblity of rolling 1 out of 6 is