Answer: The answer is 1/3
 
        
                    
             
        
        
        
For this case we have:
Cost of manufactures of T-shirts 
where x represents the number of T-shirts
Part A:
Substituting  in the total cost equation you have to:
 in the total cost equation you have to:

Thus, the cost of 8 shirts will be 
Part B:
If  then
 then

Thus, the cost of 12 shirts will be 
Answer:

 
        
                    
             
        
        
        
Answer:
 43 1 ÷12
Step-by-step explanation:
The computation of the length of the original roll of papers is shown below:
36 1 ÷3 and 6 3 ÷ 4 together
Now convert the above fractions into a number
36 1 ÷ 3 = 109 ÷3
And, 
6 3 ÷4 = 27 ÷ 4
Now add these two numbers i.e. 
109 ÷3  + 27 ÷ 4
= 436 + 81 ÷ 12
= 517 ÷12
= 43 1 ÷12