One of the factors causing the shrinking gap between rich and poor countries is
a. learning by poor countries.
b. increasing resource discoveries.
c. increasing populations in poor countries.
d. transfers of income from rich countries.
a
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Ed Sike was able to increase his net revenue by charging different prices to different customers because
A) his cost of serving different customers varied. B) his marginal costs declined as his sales increased. C) his marginal costs were rising. D) he could distinguish faculty from students at low cost.
An increase in the expected price level
A) shifts the short-run aggregate supply curve up and to the left. B) shifts the short-run aggregate supply curve down and to the right. C) has no effect on the short-run aggregate supply curve. D) results in a movement along the short-run aggregate supply curve, rather than a shift in the short-run aggregate supply curve.