Rocky ate 42 cups of dog food. Since there are 7 days in a week, 21 cups were eaten per week (3x7). Since the question is asking for the amount in two weeks, you multiply 21x2 to get 42.
        
                    
             
        
        
        
X=2
subtract 5x on both sides 
-2x=-4 
divide by -1 on both sides 
2x=4
divide by 2 on both sides 
x= 2
        
                    
             
        
        
        
It is A because you are adding 3 to in if you were to subtract then it will go down not up.
        
             
        
        
        
Answer:
25%
Step-by-step explanation:
First you have the fraction of 3/12 and need to turn it into a decimal. So to do that you divide 3 by 12 = 0.25. So your percent is 25%