Problem: Given the question: City D's mayor wants to invite more businesses in the city. Three firms, firm A, firm B, and firm C, took advantage of this opportunity. Firm A does not require large initial costs, but firm B and firm C require large initial costs. Firm B managed to increase its market share, but firm C failed to increase its market share. Which frim's average total cost would not decline, firm B or firm C?
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The answer is:
firm C

Problem: Given the question: Two counties paid a study about acid rain. They found out Hill county had experienced that, while New county hadn't. Which county experienced more precipitation destructive to wildlife?
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The answer is:
Hill

Problem: Given the question: John was studying plant varieties in different regions. He fist visited the Pacific Northwest. He found that the wind was constantly very strong there. He marked it as case A. Then he studied the plants in the Midwest. He found that on average the wind speed was very light there. He marked it as case B. Would the tree line be lower or higher in case B than in case A?
++++++++++++++++++++++++++++++++
The answer is:
higher