The document presents a production function of P = 1125 - 75P and calculates the average revenue, total revenue, and marginal revenue for 15 units of output. It shows:
1) Average revenue, total revenue, and marginal revenue decrease as output increases from 1 to 15 units.
2) Total revenue peaks at 8 units of output and then decreases as more output is produced.
3) Marginal revenue is positive when total revenue is increasing but becomes negative once total revenue starts decreasing after 8 units of output.
4) A table and graph are presented to illustrate the relationships between average revenue, total revenue, and marginal revenue at different output levels.