Grade 10 Quadratic Word Problems - Maximizing Revenue, Profit

I explain the EASIEST way to understand how to set up these questions and answer them. The key is to write an equation for the Revenue NOW and then another with the changes added for Revenue MAX Once you have this equation it's as simple as finding the zeros, add them up, divide by two and you have the NUMBER of changes that need to be made to maximize your revenue. NOTE the NUMBER of changes does NOT equal the new price.
You will still need to substitute in your x value to find the new price and the number of items sold at that price.