6 movies because you can see that each movie costs $4 so if the bill has to be under $50 you minus $25 (cable bill) from $50 and that'll give you $25 for movies, and because each movie costs $4 you can watch 6 movies (4x6 = $24) so $25 cable bill plus $24 movie fee = $49 which Is under $50 hope this helps :)
