Answer:

Step-by-step explanation:
Hi there!
Because we're given the vertex of the parabola, we can determine its equation in vertex form:
where the vertex is 
Plug in the vertex (0,0)

Now, we must solve for a. Plug in the given point (-2,3) and solve for a:

Therefore, the value of a is
. Plug this back into
:

I hope this helps!
Answer:
Im gonna go with A
Step-by-step explanation:
You multiply 11 and 10 which gives you 110%. So 10% of 110 gives you 11 .Hope i helped:)
Answer:
2.4 minutes
Step-by-step explanation:
1 h/r = 60
60 percent * 4 =
(60:100)* 4 =
(60* 4):100 =
240:100 = 2.4