ASAP MATH
this might seem easy but I cant get it around my headd

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. !

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Factor the polynomial by its greatest common monomial factor.