C is not continuous. 
Continuous functions have connected graphs; this indicates that every possible value of x has a value of y associated with it.  In this case, that says that every possible radius measurement has a number of tennis balls associated with it.  The problem with this is that we cannot have a fractional part of a tennis ball, so it is not continuous.
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
The volume of a prism is V = Bh, where B is the area of the base shape and h is the height of the prism. Find the area of the parallelogram that is the base, length x width, then multiply this by the height of the prism. l x w x h.
 
        
             
        
        
        
Answer:
50 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
x=2
Step-by-step explanation:
4x=8
/4   /4
divide both sides by 4
x=2
 
        
                    
             
        
        
        
Answer:
<h2>d = 23</h2>
Step-by-step explanation:
∠IHE and ∠GHF are vertical angles.
Vertical angles have the same measures (are congruent).
Therefore, if m∠IHE = d + 44 and m∠GHF = 4d - 25, then we have the equation:
d + 44 = 4d - 25         <em>subtract 44 from both sides</em>
d + 44 - 44 = 4d - 25 - 44
d = 4d - 69            <em>subtract 4d from both sides</em>
d - 4d = 4d - 4d - 69
-3d = -69          <em>divide both sides by (-3)</em>
-3d/(-3) = -69/(-3)
d = 23