Price	Demand	Supply
300	7400	8320
290	7480	8200
280	7520	8080
270	7600	7960
260	7640	7840
250	7720	7720
240	7760	7600
230	7840	7480
220	7880	7360

10.4 The table contains demand and supply data for eyeglasses in a local market.

a. At $280, how many pairs will consumers want to buy?

b. How many pairs will consumers want to buy if the price is $290?

c. How many pairs will stores want to sell at $290?

d. Is $290 the equilibrium price?

e. Is there excess supply or excess demand at $290?

f. What is the equilibrium price? How can you tell?