Brian places baseball cards in an album with 9 on each page. He could represent the total number of baseball cards he has in an album using the expression 9t. Brian is thinking about putting an additional 7 cards on each page. Which expression would represent the number of baseball cards in the album now?
Since you can deduce that t represents pages and when there are 9 cards per page then the expression is 9t. If you add 7 cards per page, then there will be 16 cards a page. Then, the expression is 16t