How does the graph of y=ax^2+c compare to a graph off y=ax^2?

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 of the following expressions is equal to 2x^2+8

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then