3 Which of the following represents a function? A {(-2, 1), (-2, 0), (-2, 1), (-2, 2)} B {(-1,0), (0, 1), (1, 2), (2, 3)} C {(1, 
                solong [7]             
         
        
Answer:
A
Step-by-step explanation:
because they want you to look for the number who repeat in the right like A (
 
        
                    
             
        
        
        
????????????????????????????????
        
             
        
        
        
Answer: it is not a function if the x repeats 
Step-by-step explanation: My teacher always says THE X DOES NOT REPEAT that is the easiest way to remember it
 
        
                    
             
        
        
        
48 units! This may be wrong but hoped it helped!
        
                    
             
        
        
        
   45 min. - 4 peoples - 5 walls 
     ? min. - 6 peoples - 4 walls
-------------------------------------------
180 min. - 1 man - 5 walls ⇒
  36 min. - 1 man - 1 wall ⇒
    6 min. - 6 peoples - 1 wall ⇒
  24 min. - 6 peoples - 4 walls (answer)