Commutative property of addition
        
                    
             
        
        
        
1) True. In a function, each x value has exactly one y value.
2) False. For example 

 is a function, but is not linear. It is represented by a parabola.
 
        
        
        
Taxes is the correct answer hope this helps :)
        
             
        
        
        
Answer:
There are 4 students and 9 apples
Step-by-step explanation 
each student recieves 5 apples so 5 x 4= 20  20+ 7=27 
27 can be divided by 3 and you get 9.
 each student recieves 2 apples and  there are 4 students. 9-8 =1 
 
        
             
        
        
        
I think your answer would be D