Question: Suppose the demand for down pillows is given by QD = 100 - P, and that the supply of down pillows is given by QS

Suppose the demand for down pillows is given by QD = 100 - P, and that the supply of down pillows is given by QS = - 20 + 2P.
a. Solve for the equilibrium price.
b. Plug the equilibrium price back into the demand equation and solve for the equilibrium quantity.
c. Double-check your work by plugging the equilibrium price back into the supply equation and solving for the equilibrium quantity. Does your answer agree with what you got in (b)?
d. Solve for the elasticity's of demand and supply at the equilibrium point. Which is more elastic, demand or supply?
e. Invert the demand and supply functions (in other words, solve each for P) and graph them. Do the equilibrium point and relative elasticity's shown in the graph apPEar to coincide with your answers?

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a In equilibrium Q S Q D so that Q D 100 P 20 2P Q S 100 P 20 2P P E 40 The equilibrium price for pi... View full answer

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