Answer:
Y = 5x -7 
Step-by-step explanation:
That is written in slope intercept form, which I'm assuming is what you need. If not comment on my answer.
 
        
                    
             
        
        
        
Answer:
2.4x+15.2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
To answer this, we need to see the to see to the fact that they are both in the same unit before we can take the ratio.
Firstly, we know that 1 foot = 12 inches. 9 feet would this be 9 * 12 = 108 inches. 
Now we are told to get the ratio of length of car to length of model. 
This means 108:6 = 18:1