3-83
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Diffic ulty:
02 Medium
Learning Objective: 03–05 Explain how changes in supply and demand affect equilibrium
prices and quantities.
Test Bank: I
Top ic:
Changes in Supply, Demand, and Equilibrium
176. (Advanced analysis) The demand for commodity X is represented by the equation P = 100
– 2Q and supply by the equation P = 10 + 4Q. The equilibrium quantity is
177. (Advanced analysis) The demand for commodity X is represented by the equation P = 100
– 2Q and supply by the equation P = 10 + 4Q. The equilibrium price is
178. (Advanced analysis) The demand for commodity X is represented by the equation P = 100
– 2Q and supply by the equation P = 10 + 4Q. If demand changes from P = 100 – 2Q to P = 130
– Q, the new equilibrium quantity is