You can figure out what four times eight is by adding eight and eight(16) and doubling it (32)
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:

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

Thus, the cost of 12 shirts will be 
Answer:

Answer:
I don’t for sure know the answer but I think it’s ”1”
Step-by-step explanation: