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[Problem Solving]

试题详情

题目:

The cost C, in dollars, to remove p percent of a certain pollutant from a pond is estimated by using the formula . According to this estimate, how much more would it cost to remove 90 percent of the pollutant from the pond than it would cost to remove 80 percent of the pollutant?

选项:

A、$500,000
B、$100,000
C、$50,000
D、$10,000
E、$5,000

答案:

A

提问:

老师我想问一下,这里的p percent 为什么不是0.9和0.8?而是90和80直接算?

解答:

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阅读1078
解答: 徐小梅

提问:

老师我想问一下,这里的p percent 为什么不是0.9和0.8?而是90和80直接算?

解答:

点赞0
阅读1079
解答: 徐小梅老师

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