Final answer:
The expression that represents the number of cards that each guest will get when you divide the total number of cards purchased evenly among the guests is (Option 1) startfraction 12 n over r endfraction.
Step-by-step explanation:
The expression that represents the number of cards that each guest will get when you divide the total number of cards purchased evenly among the guests is (Option 1) startfraction 12 n over r endfraction.
You purchase 12 packs of baseball cards with n cards in each pack. Since you want to divide the total number of cards evenly among r guests, you need to divide the total number of cards purchased, which is 12n, by the number of guests, which is r.
Therefore, the expression that represents the number of cards that each guest will get is startfraction 12 n over r endfraction.