Suppose the figure below shows Annie's demand curve for physical therapy. The marginal cost of each visit to the physical therapist is $150. 
If Annie had to pay the entire marginal cost of each visit to the physical therapist, then she would choose to have ______ visits a year.
A. 0
B. 10
C. 25
D. 40
Answer: C
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In perfect competition
a. the demand curve facing the firm is a horizontal line at the market price b. marginal revenue equals total revenue c. total revenue always exceeds variable cost d. price always exceeds average total cost e. marginal cost always equals average cost
In general, in a given rich country the ______________ the opportunity cost for a woman of having and raising a child, the _____________ children she will have
A) higher; fewer B) higher; more C) lower; fewer D) lower; more E) a and d
When the Federal Reserve sells a government security to a bond dealer, which transmits payment from a transactions deposit account at a bank
A. the money supply will decrease. B. the net worth of the commercial bank will decrease. C. the cash of the Federal Reserve will decrease. D. the loans of the commercial bank will increase.
Assume that banks become more conservative in their lending policies and start holding some excess reserves. Compared to a situation in which banks are not holding excess reserves, the size of the money supply will be
A. larger. B. the same. C. smaller. D. zero.