If you use the distributive property, you will multiply 4 by 2x to get 8x and 4 by -4 to get -16. 
8x-16=8x+k
If you want infinitely many solutions the equations on both sides of the equal sign need to be the same. So, k would need to be -16.
        
                    
             
        
        
        
Multiply both sides by lh, V=wlh
        
                    
             
        
        
        
The customer will pay $24.00 for a dress normally priced at $30.00
 
        
             
        
        
        
Answer:
Its option number 2 perhaps, sorry if im wrong
Step-by-step explanation:
 
        
             
        
        
        
Answer:
the ratio would be 6.75:4.5:3:2
Step-by-step explanation:
replace d and c with
d=2 and c=3
Then using proportion multiplication, you will find that b is 4.5 
now replace all b with 4.5. 
Then again using proportion multiplication, you will get a is 6.75. 
Plug in a, b, c, d in the ratio and you get 6.75:4.5:3:2