Final answer:
To find the median of the given set of numbers and determine which card would change the median if added.
Step-by-step explanation:
The median is the middle value in a set of numbers when they are arranged in ascending order. To find the median, first, we need to arrange the given set of numbers in ascending order: $8.10, $25.75. Since there are only two numbers, the median is the average of these two numbers. So, the median of the given set is ($8.10 + $25.75) / 2 = $16.925.
If we add a card to Brad's super favorite cards, the new set will be $8.10, $25.75, and the added card. In order to change the median, the added card must be either greater than $25.75 or less than $8.10. Among the given options, only $10, which is less than $8.10, would change the median. Therefore, option A) $10 would change the median if added to Brad's super favorite cards.