Under her cell phone plan, Lillian pays a flat cost of $47 per month and $3 per gigabyte. She wants to keep her bill at $57.20 per month. How many gigabytes of data can she use while staying within her budget?

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have