The answer is C
By the way, that expression means "n choose k". Hope I helped!
Answer:
My brother took this test and said it was 35. Im not sure but try it
Step-by-step explanation:
Answer:
WRONG THE ANSWER IS ACUALLY C
Step-by-step explanation:
I know this because i decided to take th4e test use his answer and it was wrong telling me the right answer it's (c).
Which parabola?

Equation of the parabola
y - y1 = 4p(x - x1)
The Vertex of the parabola given is (0, 0) because it does not have the values of x1 and y1.
Then Vertex = (0,0)
-Look for two values of y to the left and two points to the right.
You can choose the points that you which
x y
-3 y = -(-3)^2 = -9
-1 y = -(-1)^2 = -1
0 y = -(0)^2 = 0
1 y = -(1)^2 = -1
3 y = -(3)^2 = -9