Acar can be rented for ? $55 per week plus ? $0.75 per mile. how many miles can be driven if you have at most ? $340 to spend for weekly? transportation

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.