How does a monopolist decide upon price?
In the case of a monopoly, given a Demand curve, a Fixed cost and a Total Cost Curve, we can find Marginal Cost, Marginal Revenue, Average Total Cost, etc.
If the monopolist can set any price which prices maximizes profits and why.
This worksheet allows you to look at the monopolist's Revenue, Profit, Costs and how they change as you change price.
You can decide which information to make visible. It's all there.