Answer:
There is one train operator with service from Baltimore to Philadelphia
Explanation:
A natural monopoly occurs when there is high fixed or start-up costs of conducting a business in a specific industry meaning a sole producer provides the good efficiently.
Answer: b. has a backward-bending portion.
Explanation:
A backward-bending supply curve shows what happens when people substitute higher wages for more leisure time like Amari is doing in this scenario.
At a higher wage, people will be able to work for shorter hours as such a job will still give them the same amount of money as working longer in lower paying jobs.
After they get a certain level of payment from the higher paying job, they will then substitute the remaining hours for leisure. This creates a backward-bending curve because labor hours are reducing past a certain level of wages.
Answer:
The demand for beer is inelastic
Explanation:
Price Elasticity of Demand (PED) is the measure of responsiveness of the demand of a consumer to a product to a change in the price of the product. The formula is percentage change in quantity demanded divided by percentage change in price.
A PED of greater than 1 is elastic, meaning that the demand for a product is sensitive to the very small change in price.
A PED of less than 1 is said to be inelastic, which implies that there is no significant change in the quantity demanded when the price changes. In our example, the PED is inelastic because:

since 0.25 is less than 1, PED is inelastic
Finally, if the ratio of the percentage changes in both quantities demanded and price equals 1, it is said to be unit elastic. This means that there is a proportionate change in quantity demanded with a change in price.