【单选题】
Directions for QuantitativeComparison Questions: Some of the following questions give you two quantities, one inColumnA、and one inColumnB,Compare the two quantities and choose one of the following answer choices:
B、if the quantity in column
B、is greater;
A．if the quantity inColumnA、is greater;
B、if the quantity in column
B、is greater;
C．if the two quantities are equal;
D．if you cannot determine the relationship based on the given information
网考网参考答案：D
网考网解析：
To determine which quantity is greater, solve the equation x-y=1 for y by subtracting x from both sides, and then multiplying the entire equation by-1 to get y=x-1. Substituting x-1 for yin the expression 3y-1 yields 3(x-1)-1, or 3x-4. The quantities being compared are then 3x-4 and 2x. However, the greater quantity cannot be determined because the sign of x is unknown. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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