PLEASE HELP GEOMETRY WORK I'LL GIVE AS MUCH POINTS ASAP

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. !

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

4. find the geometric mean of 4 and 12. 24 8