Perfect Competition and Monopoly, Cyclical Unemployment, Various Forms of Exchange Rate Regime

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Hi I have been requested to answer those question , WHICH HIGHLIGHTED IN YELLOW COLOUR + one more question from the rest. can you please see the attachment file , its really important to see the attachment files , I am looking for a berif answer , no need for that much pages as it an previous exams , The answer should not be more then 3 pages

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