Someone me. i tried to solve it but couldn’t

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone. which are equivalent equations?

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