Suppose the market demand and supply functions are Q D =1801.5 P QD=1801.5P and Q S =3.5 P +40 QS=3.5P+40 .

Suppose the market demand and supply functions are Q D =180−1.5P QD=180−1.5P  and Q S =3.5P+40 QS=3.5P+40 . You have just graduated and moved to this city; as a new MBA and an entrepreneur, you are considering entering the market for this product.

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Determine the equilibrium price and quantity in this market.

Select one:

a. P=$1.50 P=$1.50 ; Q=180 Q=180

b. P=$25 P=$25 ; Q=127 Q=127

c. P=$28 P=$28 ; Q=138 Q=138

d. P=$35 P=$35 ; Q=127.5 Q=127.5

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You've researched and found that most firms in the market currently experience costs such that TC=15+45Q−10Q 2 +1.5Q 3  TC=15+45Q−10Q2+1.5Q3 . Determine whether or not you should enter this market.

Select one:

a. Using the P=MC P=MC rule, the equilibrium price is below ATC ATC at the best quantity, so entering would immediately incur losses. I should not enter.

b. Where the current equilibrium P=ATC P=ATC , that price exceeds the marginal cost so I would be profitable upon entering.

c. Competitive firms maximize profits when P P exceeds MC MC ; if I was producing output where this occurs, then it would be profitable to enter.

d. Plugging the market equilibrium quantity into this total cost function results in huge costs for my firm, so I should not enter.

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Due to unforeseen delays, you don't enter the market. However, a year later the market supply has changed to Q S =3.5P+10 QS=3.5P+10 . Are you surprised at this shift in supply?

Select one:

a. No; the profits that occurred in the previous question suggest that new firms would enter. This entry would shift supply right, which is what the new supply curve did.

b. No; the losses incurred under the old supply curve would cause some sellers to exit, shifting supply to the left (which is what this new supply curve did).

c. Yes; the earlier profits should have caused mergers among firms, reducing the number of suppliers and thus supply itself (curve should shift left), though the new supply curve has actually increased (shifted right).

d. Yes; the losses earned earlier should have reduced supply whereas this new equation shows an increase in supply.

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Given the new supply conditions Q S =3.5P+10 QS=3.5P+10 , determine whether or not you should enter the market.

Select one:

a. No; the new equilibrium price is below AVC AVC so if I entered I would have to immediately shut down.

b. Yes; the new equilibrium price is slightly above ATC ATC at the optimal quantity. If I entered I'd earn slightly above normal profit.

c. No; MC MC is above AVC AVC so I would not recoup my fixed costs.

d. Yes; the new equilibrium price is now between AVC AVC and ATC ATC at the optimal quantity, so firms (including my new one) will earn loss but choose to stay open.