Under her cell phone plan, Gianna pays a flat cost of $57 per month and $3 per gigabyte. She wants to keep her bill under $90 per month. Which inequality can be used to determine xx, the maximum number of gigabytes Gianna can use while staying within her budget?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?