GRE

简答题 Which of the following would be the best estimate for the value of x?

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D.The point marked x is between一2 and一1,which rules out一2.7 and一2.3 (1ess than一2)and also一0.7(greater than一1).Furthermore,x appears closer to一1 than to一2.which makes一1.3 a better estimate than一1.7.