What is allocative efficiency?
When P = MC
The change in total revenue resulting from the use of each additional unit of a resource.
What is marginal revenue product?
Large number of firms, standardized product, price takers, free entry and exit.
What is characteristics of purely (perfectly) competitive markets?
What is area 1 depicting?

Consumer Surplus
What is profit maximizing rule for all firms?
MR = MC
The monetary income a firm sacrifices when it uses a resource it owns rather than supplying the resource in the market.
Input costs that do not require an outlay of money by the firm.
What is implicit cost?
Cheese and bread are complementary goods, and the price of cheese has increased.
What happens to the demand for bread as a result?
If the price of cheese increases, the price for bread increases and the demand for bread decreases.
A perfectly competitive firm does this when their P>AVC but less than ATC.
What is continue to produce in the Short Run to minimize losses?
A good or service that is characterized by non-rivalry and non excludability.
What is a public good?
What type of graph is shown below?

A monopoly making positive profit (in the long run)
This graph highlights the possible combinations of products/output one individual can do in a given period of time.
What is Production Possibilities Frontier
The demand for a product is elastic and a monopoly decides to increase the price of their item. What happens to the firm's total revenue?
If demand is elastic, when price goes up, total revenue goes down.
This perfect competition graph represents profit maximization in the...

What is the Long Run.
Reductions in combined consumer and producer surplus caused by an under allocation or overallocation of resources to the production of a good or service.
(Brings us away from our equilibrium)
What is dead weight loss (efficiency loss)
What are the four factors of production?
Land, Labor, Capital and Entrepreneurship
What is unit elastic?
Would the monopolistic firm shown in the graph below be making positive, negative, or zero economic profit?

What is Zero economic profit?
The price paid for the use of land, and other resources which are fixed in supply.
What is economic rent?
Assume the cross-price elasticity of demand between AirCab's flights and Good L is +1.4.
a. If the price of Good L decreases by 2%, by how much will the quantity of AirCab flights change?
b. Are AirCab's flights and Good L substitute, complement, or inferior goods? Explain why.
a. The quantity of AirCab's flights will decrease by 2.8%.
b. They are substitutes because as price decreases for Good L, the quantity demanded would increase, which would be a negative elasticity and if they are substitutes then the quantity demanded of a substitute would decrease, leading to a positive cross-price elasticity.
What does point 2 signify?
What does point 5 signify?

point 2 is the allocatively efficient quantity and price (socially optimal... best for society) where demand equals the Marginal Cost.
point 5 is the point of unit elasticity. The demand is inelastic to the right of the point and elastic to the left of the point.