Final answer:
Farrah's description of the cost as 8t, where t is the number of T-shirts, directly tells us the cost per T-shirt, which is $8.
Step-by-step explanation:
The question requires us to determine which person's description tells how much each T-shirt costs. Casey says the total cost for 14 players is $112, which implies that to find the cost per T-shirt, we would divide the total cost by the number of players. So, the cost per T-shirt would be $112 divided by 14 players, equal to $8 per T-shirt. On the other hand, Farrah describes the cost as 8t, which indicates that 't' represents the number of T-shirts, and 8 represents the cost per T-shirt.
Considering this, Farrah's description is the one that directly tells us the cost of each T-shirt. Therefore, the answer to the question is Farrah's description of 8t, where t is the number of T-shirts, and 8 represents the cost per T-shirt.
Furthermore, the information provided from other examples, such as the case where giving up the fourth T-shirt frees up $14, the price of a T-shirt, supports that the price per T-shirt might indeed be $8 or $14, depending on the given context.