SOLUTION: Is the following linear, quadratic, or other, explain your reasoning. A dealer sells cars for $800 mark-up. For every $200 less mark-up they will sell 1 more car. What mark-up

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: Is the following linear, quadratic, or other, explain your reasoning. A dealer sells cars for $800 mark-up. For every $200 less mark-up they will sell 1 more car. What mark-up       Log On


   

Question 1132872: Is the following linear, quadratic, or other, explain your reasoning.
A dealer sells cars for $800 mark-up. For every $200 less mark-up they will sell 1 more car. What mark-up will maximize profit?


Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Set it up with profit being number of cars sold*mark-up.
(800-200x)(x) is the function that determines the profit. This is 800x-200x^2 and is quadratic.