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?

According to the classical growth theory of Thomas Malthus

A) labor productivity increases continuously. B) the population growth rate is fixed. C) technological advances lead to permanent increases in real GDP per person. D) increases in real GDP per person are only temporary.

If penalties are imposed on the sellers of illegal goods or services, then the equilibrium price ________ and the equilibrium quantity ________

A) rises; increases B) rises; decreases C) falls; increases D) falls; decreases