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-4≤x≤4 -8≤y≤-4Column A Column BThe g
-4≤x≤4 -8≤y≤-4Column A Column BThe g
游客
2025-02-24
33
管理
问题
-4≤x≤4 -8≤y≤-4
Column A Column B
The greatest possible value of 25x-12.5y 200
选项
A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案
C
解析
本题的正确答案为(C)。此题实际上是让求25x-12.5y的最大值,考生只须取x的最大值(x=4),而取y的最小值(y=-8)即可,然后把x和y的值代入25x-12.5y可得其最大可能值为200。
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