1 coin is 4 ways
2 coins is 4*3 ways
3 coins is 4*3*2 ways
4 coins is 4*3*2*1 ways
so total is 4+12+24+24=64 sums
        
             
        
        
        
Okay, so first you have to factor out that negative throughout the parenthesis.
(2x-4)-3x-2
Then, put like terms together so you can organize your problem.
2x-3x-4-2
Now all you have to do is combine the like terms!
-x-6
Oh look, that's a. A is the answer.
        
             
        
        
        
Answer:
part a- if he really wants it then yes but its overpriced with the tax. part b- about $5.80  CORRECT ME IF IM WRONG I USED A NEW APP 
Step-by-step explanation:
 
        
             
        
        
        
answer is 31
Step-by-step explanation: