Pls help. Its multiple choice

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 property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?