Final answer:
The equation that can be used to calculate the cost of the dressing material per shirt is Cost per shirt = Total cost of dressing material / Number of shirts.
Step-by-step explanation:
The equation that can be used to calculate the cost of the dressing material per shirt is option 1) Cost per shirt = Total cost of dressing material / Number of shirts.
Dividing the total cost of dressing material by the number of shirts will give you the cost per shirt. The equation that can be used to calculate the cost of the dressing material per shirt is Cost per shirt = Total cost of dressing material / Number of shirts.
For example, if the total cost of dressing material is $1000 and the number of shirts is 200, then the cost per shirt would be $1000 / 200 = $5.