Explain your answer please I'm having trouble with these problems

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. !

Name the most appropriate metric unit for each measurement like the mass of cow

Care repairs are less than or equal to $500