8 because inverse operations indicate that 4x2=8
        
             
        
        
        
Let's check
3m - 9 = 9+3m
collect like terms
3m -3m = 9 + 9
0m = 18
which is not possible, so it will not have any solutions 
        
                    
             
        
        
        
The denominator can't equal 0.

The answer is D.
 
        
        
        
Answer:
to find theoretical probability, devide the favorable outcomes by the total possible outcomes
to find experimental probability, for example on a coin, devide how many times it landed on heads by how many times you flipped it
i hope this helps :)