Answer:
If a is positive, the parabola will open to the right, so the answer is C
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
the quartiles are illustrated as 55 and 59. The average is 57.5 so 58? These are the key points on this type of graph.
Answer:

Step-by-step explanation:



Answer:
They used 3.14 for pi:


Step-by-step explanation:
is the volume of a sphere with radius r.
I think that is the diameter given in the picture.
The radius is half the diameter.
So the radius is 5 since the diameter is 10.
Plug in this gives you:

1.595 to 2 decimal points is 1.60 because the second decimal place is nearest to 10.