It also stimulates production of IGF-1. GH is used as a prescription drug in medicine to treat children's growth disorders and adult growth hormone deficiency. In the United States, it is only available legally from pharmacies, by prescription from a doctor.
Marginal cost is the change in total cost when another unit is produced; average cost is the total cost divided by the number of goods produced. Distinguish between marginal and average costs. The marginal cost is the cost of producing one more unit of a good.
The average variable cost (AVC) curve will go down (but will not be as steep as the marginal cost), and then go up. This will not go up as fast as the marginal cost curve. The average fixed cost (AFC) curve will decline as additional units are produced, and continue to decline.The average total cost (ATC) curve initially will decline as fixed costs are spread over a larger number of units, but will go up as marginal costs increase due to the law of diminishing returns.The graph below illustrates the shapes of these curves.Figure 3.8: Cost Curves.he average total cost (ATC) curve initially will decline as fixed costs are spread over a larger number of units, but will go up as marginal costs increase due to the law of diminishing returns. The graph below illustrates the shapes of these curves.Figure 3.8: Cost Curves.