If the exchange rate of the Swiss franc is 1.61 francs per dollar, then the Swiss franc is worth about

Consider the following information for a family. The income for the family is $58,000; if the MPC is 0.6, and income increases by $13,000, then the increase in savings for the family is:

a. $5,400. b. $5,200. c. $420. d. $7,800.

The competition faced by firms in an oligopoly with differentiated products is higher than that faced by firm(s) in ________

A) a duopoly with homogeneous products B) perfect competition C) monopolistic competition D) monopoly