Final answer:
The retail store price for a pair of shoes that costs $15 would likely include additional costs such as markup and tax, but without the specific markup percentage, the exact retail price cannot be determined.
Step-by-step explanation:
To determine the retail store price for a pair of shoes that costs $15 at Shoe Super Store, additional information such as the markup percentage is needed. However, if we suppose that the business model is similar to the example provided where Coolshirts sells t-shirts at a price of $9 each, or the other example of a T-shirt and shorts costing $20.98 plus $1.47 tax for a total of $22.45, we can infer that the retail price is typically higher than the cost to account for profit and overhead expenses.
Assuming there is a standard markup, and based on the information provided about the T-shirts, we can make an educated guess. If the base cost of an item is $15, the store will likely add a certain percentage to this cost as a markup. The actual retail price could depend on various factors, including the store's location, brand of the shoes, demand, and the specific markup strategy applied by Shoe Super Store.