Elixir Spring produces a unique and highly prized mineral water. The firm's total fixed cost is $5,000 a day, and its marginal cost is zero. Table 1 shows the demand schedule for Elixir water.
On a graph, show the demand curve for Elixir water and Elixir Spring's marginal revenue curve. What are Elixir's profit-maximizing price, output, and economic profit?