I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:

Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.
 
        
        
        
Answer:
-36
Step-by-step explanation:
-3 ×12=--36
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2x +2 = 3x - 52
-2x -2x
2 = x -52
+52 +52
50 = x
 
        
                    
             
        
        
        
First we need to find the circumference
C= 2 pi r or C= d*pi
d=2 m
C=2*3.14=6.28
distance traveled=6.28 m*120=753.60 m