2. 外语
  3. Each of Questions 1 to 7 presents two quantities, Quantity A and Quantity B. Compare the two quantities. You may use additional

Each of Questions 1 to 7 presents two quantities, Quantity A and Quantity B. Compare the two quantities. You may use additional

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问题 Each of Questions 1 to 7 presents two quantities, Quantity A and Quantity B. Compare the two quantities. You may use additional information centered above the quantities if such information is given. Choose one of the following answer choices:
A if Quantity A is greater;
B if Quantity B is greater;
C if the two quantities are equal;
D if you cannot determine the relationship based on the given information.

选项 A、 
B、 
C、 
D、 
答案C
解析 The correct answer is C. To solve this problem, substitute the given values into the equation for Quantity A:
If s=10,then(s-3)2 =(10-3)2=49
If s=-4, then(s-3)2 =(-4-3)2=49
Therefore, both quantities are equal.
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