Answer:
w=4
Step-by-step explanation:
18+3w=30
3w=30-18
3w=12
w=4
 
        
                    
             
        
        
        
Answer:
The answer is 8 quarters, 16 nickles, and 32 dimes
Step-by-step explanation:
- First, the equation would be (2/4d) x 5 +d x 10 +1/4d x 25= 600 (Don't put 6.00, that's dollars. We put 6 dollars into cents to make it easier.) 
- Then we slowly start to solve: 10/4d + 10d + 25/4d = 600 
- 10d+40d+25d/4 = 600 (Put all of that over 4, not first 25d) 
- 75d= 600 x 4 
- d=600 x 4/75 (same here put everything over 75) 
- d=32 
- So then n= 2 x 32/4 = 16 
- Then n would be equal to : 1/4d= 1/4 x 32 = 8 
- So your answer would be 8 quarters, 16 nickles, and 32 dimes. 
Hope this helped :)
 
        
             
        
        
        
I think it would be 315. because 4.5*70..but im not sure