refer to exhibit 5-5. suppose that d2 and s1 are the prevailing demand and supply curves for a product. if the demand schedule changes from d2 to d1, then: a. equilibrium quantity increases from 13 to 18. b. equilibrium price decreases from $6 to $4. c. equilibrium quantity decreases from 15 to 13. d. equilibrium price increases from $6 to $8.

c. equilibrium quantity decreases from 15 to 13

Explanation:

When demand schedule is D1 and supply schedule is S1,the equilbrium is established at 13 units and price is $6.(quantity demanded = quantity supplied)

Initially when demand schedule was D2 and supply schedule was S1, equilibrium was established at 15 units and price = $8.

Equilibrium quantity decreases from 15 to 13

answer; i believe the correct answer is (a) purchase of treasury stock;

they can see what that city is producing and to also see if they can some how get that product. like gold in africa.