Answer:
or 
Step-by-step explanation:
we know that
The general equation of a horizontal parabola open to the left is equal to

where
(h,k) is the vertex of the parabola
p is the focal distance (distance from the vertex to the focus)
In this problem we have
The vertex is the point (2,-4)
so

The Focus is the point F(1,-4)
so
the focal distance p=2-1=1 ---> distance from the vertex to the focus
substitute in the formula


Answer:
Step-by-step explanation:
r = 9.1 m
SA =3πr²

I would say D because you can not have a sample size of every student in a city, state, or country
Answer:
(-∞, 6) or [5, ∞)
Step-by-step explanation:
subtract 3
5x< -30 or 3x ≥ 15 .
divide
x < 6 or x ≥ 5
Which question do you need to be answered? do you want all of them?