The figure below shows the supply and demand curves for oranges in Smallville. 
What is the marginal cost of producing the tenth pound of oranges?
A. $4
B. $2
C. $5
D. $3
Answer: A
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Explicit costs include
a. monitoring expenses incurred by the government b. enforcement costs paid by the public sector c. compliance costs incurred by all economic sectors d. all of the above e. none of the above
An example of the opportunity to gain human capital would be:
A. a firm offering on-the-job training. B. a firm starting a community garden for its employees. C. a firm expanding and creating 20 more jobs. D. All of these are examples of human capital.
Answer the following statement true (T) or false (F)
1) Unlike most demand curves, the demand curve for loanable funds is upsloping. 2) Present value is the amount to which some current amount of money will grow as interest compounds over time. 3) The time-value of money refers to the idea that a given amount of money is more valuable to a person the sooner it is received. 4) The future value of $3,000 deposited today at 5 percent interest is $3,646.52 four years from now. 5) The present value of $4,000 deposited today at 8 percent interest is $5,038.85 three years from now.
In 2017, economists working at the U.S. Department of Treasury's Office of Tax Analysis have estimated that the marginal social cost of carbon dioxide emissions was about
A) $7 per metric ton. B) $32 per metric ton. C) $49 per metric ton. D) $70 per metric ton.