Choosing eight numbers that match a randomly selected balls on the walls are numbered one through 32

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

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

What term makes it inconsistent y=2x - 4