Set 7x-4 and 31 equal to each other
7X-4=31
Add four to both sides
7X=27
X=3
The answer is D
        
                    
             
        
        
        
Answer:
Provide the graphs by editing the question and then I will edit the answer. But the equation answer is  .
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Step-by-step explanation:
 
        
             
        
        
        
Answer:
16x5+6x4
Step-by-step explanation:
(2x(3+5)+6)(x4)
=(2x(3+5)+6)(x4)
=(2x(3+5))(x4)+(6)(x4)
=16x5+6x4
 
        
                    
             
        
        
        
4x+6 is produced each day.
So in 12 days the expression is 12(4x+6)
Solve and you get 48x+72.