Answer: A
Step by step explanation:
The answer is a because I wired it out
For this case we have that by definition, the volume of a sphere is given by:

Where:
r: It is the radius of the sphere
According to the statement we have to:

So the volume is:

Rounding we have that the volume of the sphere is: 
Answer:
Option B
Answer:

Step-by-step explanation:
You have to divide the entire equation by 285 to get y alone.
Then, simplify the fraction to get 1/19.
2 hours for the 8 miles, and 4 hours on the 1/3 hours.j