If a perfectly competitive firm can sells its product for $20 and the average cost for producing the product is $13, what is the per unit profit?  Enter your answer as a numeric value.

Which of the following best describes the built-in stabilizers as they function in the United States during an expansionary phase?

A rise in incomes increases or decreases the demand for normal goods such as restaurant meals, sports tickets, and necklaces.

Whenever external costs exist:

Match the example to the correct market structure.

Select all that apply.  Which of the following is true about market demand for a monopoly?

Which of the following best describes the built-in stabilizers as they function in the United States during an expansionary phase?

Monopolists are price:

Match the example to the correct market structure.

If a perfectly competitive firm can sells its product for $20 and the average cost for producing the product is $13, what is the per unit profit?  Enter your answer as a numeric value.