People need medications, but the poor often cannot afford them. Governments may not provide subsidies for health care and medications. Meanwhile, pharmaceutical firms focus their R&D on compounds likely to provide the best returns. What is the proper role of the following groups in addressing these ­dilemmas: national governments, branded pharmaceutical firms, and generic manufacturers?

One of the growers is excited by this advancement because now he can sell more crops, which he believes will increase revenue in this market. as an economics student, you can use elasticities to determine whether this change in price will lead to an increase or decrease in total revenue in this market. using the midpoint method, the price elasticity of demand for soybeans between the prices of $5 and $4 per bushel is , which means demand is between these two points. therefore, you would tell the grower that his claim is because total revenue will as a result of the technological advancement.