It decreased $7 in the last 2 days
        
             
        
        
        
Answer:
4
Step-by-step explanation:
 
        
             
        
        
        
Let x = Darlene's dog's weightlet y = Leah's dog's weight x = 5yx + y = 84 so, 5y + y = 84, which means 6y = 84   so, y = 84/6 = 14x = 5(14) = 70    Darlene's dog = 70 lbs, Leah's dog = 14 lbs.<span> </span>
        
             
        
        
        
Answer I cant read the thing sorry 
Step-by-step explanation:
hoped that hepled:)