Answer:
A
Step-by-step explanation:
i think so..sorry if im wrong
Answer:
The parent function is 
That Parabola's equation is 
Step-by-step explanation:
I can't really explain much, but the top equation is a formula for <em>all </em>equations for a parabola. h and k are the x and y-values of the vertex. a is, well, a.
How did I find the equation of the parabola? Simple. Since the vertex is on the origin, h and k are 0. Also, because it intercepts (2,4) and (1,1), a=1.
Answer:
B
Step-by-step explanation:
He found out how many people who play 2+ instruments are 8th graders rather than how many 8th graders play 2+ instruments.