Completa la siguiente secuencia:

1, 2, 3, 5 ,5, 8, 7, __

I'm terrible at math any here is appreciated.

How to do this , and can some one explain

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.