2. 外语
  3. Based on the graph shown, what was the average yearly decrease in the price of polyester between 1994 and 1998, inclusive?

Based on the graph shown, what was the average yearly decrease in the price of polyester between 1994 and 1998, inclusive?

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问题
Based on the graph shown, what was the average yearly decrease in the price of polyester between 1994 and 1998, inclusive?
选项 A、$1,250
B、$2,500
C、$3,750
D、$5,000
E、$6,250
答案A
解析 The correct answer is A. To find the average yearly decrease, first find the total decrease over the 4 years. In 1994 the total price of polyester was approximately $35,000, and in 1998, it was approximately $30,000. So the difference is $5,000. Now, to find the average, divide by 4 years: 5,000 + 4 = 1,250.
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