Which function has the GREATEST rate of change and what is the rate?

Do not comment if you aren’t going to . create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

Me because some of question i don’t understand

Which of the following best describes the figure?