Answer:
A. y-axis only
Step-by-step explanation:
We have the graph of  as given below.
It can be seen that  passes through the points (0,0), (4,0) and (6,0).
Also, the graph is plotted in the 1st and 2nd quadrant symmetrically along the y-axis.
Hence, the axis of symmetry of  is the y-axis only.
 
        
                    
             
        
        
        
Answer:
The third response 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The first step is to slove the numbers in the brackets
Step-by-step explanation:
[(x+7) x -2] / 4 = 7
-2(x+7) / 4 = 7
-2x-14 / 4 = 7
-2x-14 = 28
-2x = 42
x = -21
PEMDAS
 
        
             
        
        
        
Answer:
Step-by-step explanation:
2x+y
=2(2)+1
=4+1
=5