How do you do a, b, c, d? with work shown you.

Do not comment if you aren’t going to . 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 is true for the relation f(x)=2x^2+1

What is the 12th term of b(n)=-4-2(n-1)