Answer:
8
Step-by-step explanation:
First off, we need to recognize that the formula for the volume of a sphere is
.
Then, we can plug in our r values one at a time.
The volume for the sphere with a 6-inch radius is about 904.779.
The volume for the sphere with a 3-inch radius is about 113.097.
To find how much greater the larger sphere is, we simply create a ratio between the two numbers: 
Do the division to find that the volume of the larger sphere is about 8 times the volume of the smaller sphere.
Answer: it’s the third one
Step-by-step explanation:
It is
A) One solution: 5x +2y = 0 . . . . (any line with a different slope)
b) Two solutions: not possible
c) No solutions: 5x -2y = 0 . . . . (any different line with the same slope)
d) Infinitely many solutions: 10x -4y = 6 . . . . (any other equation for the same line)