Final Answer:
The unit price of each T-shirt in the 8-pack is $3.96.
Step-by-step explanation:
To calculate the unit price, divide the total cost by the number of items. In this case, the cost of the 8-pack is $31.68. So, the unit price
is given by the formula

Substituting the values,
. Therefore, each T-shirt's unit price is $3.96.
Understanding unit price is crucial for consumers to make informed decisions. It allows for easy comparison of the cost of individual items within a package or quantity. In this scenario, it helps consumers assess whether the price for each T-shirt in the 8-pack is reasonable and competitive.