Alex pays $230 every month on her account for her cell phone. Each time she uses the cell phone, $5 is added to her bill. What is the rate of change for this situation?
please help!!

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

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

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3