Week 6- Real world connection

In AP stats, something we went over in the last unit had to do with quadratic functions. Since it was a small part of the entire unit we were told how to find 'x' with our calculator given the a b and c variables. Using this knowledge in functions, I can find 'x' to use as a reference to see if my answer was correct. Of course I would have to show my work so this will only be useful for checking, not solving the problem.