Can someone help me with geometry??

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. !

Match each expression with its simplified form.

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be