Answer:
i think 12 
Step-by-step explanation:
i don t know is it right
 
        
             
        
        
        
The unit cost for one wing is 1.5 so $1.50
        
                    
             
        
        
        
Divide the area by the number in the triangle
        
                    
             
        
        
        
Answer:
Rate is 9 kilometers (km)/week. 
Step-by-step explanation:
9000 meters is 9 km (divide m by 1000 to get km)