Answer:
B. 6
Step-by-step explanation:
D. 12 cant be multiplied to get 18
C. 4 cant be multiplied to get 18
A. 2 is a common factor of 12 and 18 but not the greatest. 
B. 6 times 2 is 12 and 6 times 3 is 18 so 6 is the greatest common factor. 
 
        
                    
             
        
        
        
the greatest common factor is 2
 
        
                    
             
        
        
        
Answer:
<em>The slope is:</em>

Step-by-step explanation:
The slope m of a line is calculated using the following formula

Where the points  and
 and  are two points belonging to the straight line
  are two points belonging to the straight line
Notice in the graph that the line passes through the points
(0, 2) and (2, -1)
Then the slope is:


 
        
             
        
        
        
Answer:
2825.4227689325 millimeters2
Step-by-step explanation:
sorry if wrong!