Even though 80,000 individuals in the United States wait for kidney transplants and, for a price, there are many individuals who would be willing to supply a kidney (a healthy person can donate one kidney without any problems), it remains illegal to buy and sell organs in the United States. A market for kidneys does not exist because of:

Suppose the governor of California has proposed increasing toll rates on California's toll roads, and has presented two possible scenarios to implement these increases

Following are projected data for the two scenarios for the California toll roads: Scenario 1: Toll rate in 2015: $10.00. Toll rate in 2019: $22.50 For every 100 cars using the toll roads in 2015, only 81.6 cars will use the toll roads in 2019. Scenario 2: Toll rate in 2015: $10.00. Toll rate in 2019: $17.50 For every 100 cars using the toll roads in 2015, only 96.2 cars will use the toll roads in 2019. a. Using the midpoint formula, calculate the price elasticity of demand for Scenario 1 and Scenario 2. b. Assume 10,000 cars use California toll roads every day in 2015. What would be the daily total revenue received for each scenario in 2015 and in 2019? c. Is demand under Scenario 1 and under Scenario 2 price elastic, inelastic, or unit elastic. Briefly explain. (For above questions, assume that nothing other than the toll change occurs during the time frame listed that would affect consumer demand.)

Holding everything else constant, as the price of natural gas rises, selling natural gas becomes

a. more profitable, and the quantity supplied falls b. less profitable, and the quantity supplied rises c. less profitable, and the quantity supplied falls d. more profitable, and the quantity supplied rises e. more profitable, but the quantity supplied does not change