Algebra question 100% correct only

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. !

Which rational number could be graphed between -4 and -5

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check