EXPLANATION
The volume of a sphere is given by the following relationship:

Replacing terms:


Multiplying numbers:

The answer is 4,186.67 yd^3
2.5... if you question was 5/2
a and b are parallel because 114 = 66+48 = 114, these two angles are the same because they are alternate exterior angles, and they couldn't be the same if a and b are not parallel.
The starting amount is $50. The decay rate is 25%.The equation for this problem is f(x)=50(.25)^x
Also if you need the answer to the equation it is that the video game will be worth $0.