Final answer:
The expression to determine the discount when buying shoes and hats can be written as (s + 24.80). The discount amount is always $24.80 regardless of the retail price of the shoes.
Step-by-step explanation:
The expression to determine the discount when you buy shoes with a retail price of s dollars and hats with a total retail price of $24.80 can be written as:
(s + 24.80)
To find the discount, you can subtract the original price from the final price. Therefore, another expression that can be used to determine the discount is:
(s + 24.80) - s
This expression simplifies to 24.80. So, the discount amount is always $24.80 regardless of the retail price of the shoes.