Remember, the volume formula of a sphere is 

.
Set that equation equal to whatever volume they give you and solve for r.

 = 

Now solve for r! I know you can do this. If you need help, just comment.
 
        
        
        
Answer:
I'd assume 7 times x, or 7x
Step-by-step explanation:
Algebraic phrases don’t include the equal sign and based on the information you gave me, I think 7x is the answer.
 
        
             
        
        
        
Answer:
16 m
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: A) 6x+2 
Step-by-step explanation:
I just figured it out
 
        
             
        
        
        
We have:

and:

so:


It is a finite sum, so it is convergent.