-3.073 that is the correct answer
        
             
        
        
        
x^3 - 3x^2 - 18x
Using the FOIL method, I arrived at my solution!
 
        
             
        
        
        
The <u>correct scale</u> is 1 in = 4 mi.
<u>Explanation</u>:
The scale tells us what a given measurement on the map equals in real-life distance.  
The measurement on the map that we have is 2 inches, and it equals 8 miles:
2 in = 8 mi
This can also be written as 2/8.  This fraction can be simplified, since both 2 and 8 are divisible by 2; it will simplify to 1/4.  This is the same as 
1 in = 4 mi.
        
                    
             
        
        
        
Can you please tell me your question?