Amovie theater has two rooms. room 1 has 9 rows of seats with 18 seats in each row. room 2 has three times as many seats as room 1.how many seats are there in both rooms

Carli has 90 apps on her phone. braylen has half the amount of apps as theiss. if carli has three timesthe amount of apps as theiss,how many apps does braylen have? let b represent the number of braylen's apps and t represent the number of theiss's apps.