It's D. That is the only true statement.
Xcubed=y
Each slice was 2$ entrance fee was 4$
A quadratic function whose vertex is the same as the y-intercept has the equation
y=x^2+k (where k is the y-intercept, with vertex (0,k))
Since the vertex coincides with the y-intercept, the axis of symmetry is x=0.
Answer:
The first question is A.
The second question is C.
The thid question is B., I think i'm not quit sure sorry