Which is the marginal relative frequency for the people who do not like cantaloupe

Which is an equation for the nth terms of the sequence 12,15,18,21

If the class was going to get a class pet and 5 picked fish and 7 pick bird and 8 picked rabbits have many students were in the

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection