Answer:
It's the third one in the picture ...
r = 3x - 2y
Explanation:
 
        
             
        
        
        
Answer:
i think..its fraction that its have multiple fractions on it..if you minus the 397 000-355 it should be 381+ so i say if you get the 5 multiply it by 9!! so you will get it!
Explanation:
HOPE IT HELPS!!
 
        
             
        
        
        
Answer: When quantities have the same relative size. In other words they have the same ratio corresponding in size or amount to something else.
Explanation: Example: "A rope's length and weight are in proportion." 
Example: "The punishment should be proportional to the crime"