The total cost c ( in dollars) to participate in a triathlon series is given by the literal equation c =90x+35 where x is the number of triathlon in which you participate

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.