Assume that Margo and Jermrmy filled x cards . Therefore, the total number of cards is 2x.
Adding 8 more cards to this album implies,
[tex]T=2x+8[/tex]The other two alumbs have same number of cards as in first album. Thus, the total number of cards in all three albums are,
[tex]T=3(2x+8)[/tex]Hence, Option D is right.