Answer:
C. 10–15, 15–20, 20–25, 25–30, 30–35
Step-by-step explanation:
 
        
             
        
        
        
Answer:
w=-7/2z
Step-by-step explanation:
to solve for w you firstly have to group the like terms 
5w-3w=2z-9z
2w=-7z
then you have to divide both sides by 2 inorder to remain with w on one side.
2w/2=-7/2
w=-7/2
I hope this helps
 
        
                    
             
        
        
        
The answer is 4.5 miles. Hope it helps!