Fuel and shipping costs are examples of __________ costs.
Fill in the blank(s) with the appropriate word(s).
variable
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Refer to the figure below.________ inflation will eventually move the economy pictured in the diagram from short-run equilibrium at point ________ to long-run equilibrium at point ________. 
A. Rising; A B. Falling; A; C C. Falling; B: C D. Rising; A; C
A study attempts to investigate the role of the various determinants of regional Canadian unemployment rates in order to get a better picture of Canadian aggregate unemployment rate behavior
The annual data (1967-1991) is for five regions (Atlantic region, Quebec, Ontario, Prairies, and British Columbia), and four age-gender groups (female and male, adult and young). Focusing on young females, the authors find significant effects for the following variables: the regional relative minimum wage rate (minimum wages divided by average hourly earnings), the regional share of youth in the labor force, the regional share of adult females in the labor force, United States activity shocks (deviations of United States GDP from trend), an indicator of the degree of monetary tightness in Canada, regional union density, and a regional index of unemployment insurance generosity. Explain why the authors only used region fixed effects. How would their specification have to change if they also employed time fixed effects? What will be an ideal response?
Which of the following is true?
a. Uncertainty accompanies investment decisions. b. At any given time, there are a virtually infinite number of potential investment projects that might be undertaken by investors. c. In order to be successful, entrepreneurs must be good at recognizing and undertaking economically beneficial projects. d. All of the above are correct.
Which of the following is an example of an externality?
a. A paper mill dumps waste into the river. b. A neighbor's loud music disrupts sleep. c. A drunk driver causes an accident that injures another person. d. All of the above are correct.