In the above table, saving must be
A) -$300 billion.
B) $300 billion.
C) $400 billion.
D) -$400 billion.
C
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Marginal returns start to decrease when more and more workers _______
A. have to share the same equipment and workspace B. produce less and less output C. require jobs to be too specialized D. produce less and less average product
A firm advertising using an expensive, famous spokesperson is often
A) aimed to raise rivals' costs. B) used to increase the total market demand. C) used to steal customers from rivals. D) used to focus on general problems the product addresses.
The way one firm relates to another in the supply chain is referred to as being
A) upstream or downstream. B) latitudinal or longitudinal. C) left or right. D) competitor or conspirator.
A consulting firm estimates the following quarterly sales forecasting model:Qt = a + bt +cDThe equation is estimated using quarterly data from 2005 I - 2015 III (t = 1,..., 43). The variable D is a dummy variable for the second quarter where: D = 1 in the second quarter, and 0 otherwise. The results of the estimation are: 
Given the above, these estimates indicate that the second quarter change in sales is
A. 24.5 units higher in the second quarter than in the other three quarters. B. 1.86 units higher in the second quarter than in the other three quarters. C. 2.00 units higher in the second quarter than in the other three quarters. D. 22.5 units higher in the second quarter than in the other three quarters.