A map is an example of a model because a map
A) realistically describes an area.
B) is always as complex as space will permit.
C) is two-dimensional.
D) is a simplified representation of reality.
Answer: D
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Assume that the hourly price for the services of tarot card readers has risen and sales of these services have also risen. One can conclude that
A) the demand for tarot card readers has increased. B) the law of demand has been violated. C) the number of tarot card readers has increased. D) tarot card readers are deliberately charging high prices because they provide services for superstitious clients.
Suppose the president of a textbook publisher argues that a 10 percent increase in the price of textbooks will raise total revenue for the publisher. It can be concluded that the company president thinks that demand for textbooks is:
A. unitary elastic. B. inelastic. C. elastic. D. perfectly inelastic.