Dan's marginal cost is $500 and marginal revenue is $900. His cost to produce 40 items is $30,000.

Dan's marginal cost is $500 and marginal revenue is $900. His cost to produce 40 items is $30,000. 1. Find Dan's cost function. 2. Find Dan's revenue function. 3. Find Dan's profit function. 4. Find Dan's breakeven point. units