Answer:
6/5
Step-by-step explanation:
I hope that it's a clear solution. 
 
        
                    
             
        
        
        
1.) You have 12 toppings. You choose one topping--that leaves you with 11 toppings. You choose another--that leaves 10. 12×11×10 = 1,320.
Multiply 1,320 topping choices by 6 cheeses to get 7,920 total combinations.
2.) (Though I'm less sure of these)
 CDs: 6×5×4×3×2 = 720
 Cassettes: 5×4 = 20
 DVDs: 8×7×6×5 = 1680
        
             
        
        
        
Answer:

Step-by-step explanation:
we have

Solve for m
That means-----> isolate the variable m
Factor the variable m in the equation
![g=m[4c-3]](https://tex.z-dn.net/?f=g%3Dm%5B4c-3%5D)
Divide by (4c-3) both sides

Rewrite

 
        
             
        
        
        
The equation to find out the volume in this case is V=x*x*2x, or V=2x^3. Use this we can get that the volumes would be 16, 54, 128, and 250.