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SAT每日一题--12.08

2015-12-08 14:22  作者:  来源:  字号:T|T

Read the following SAT test question and then click on a button to select your answer.

  If the function f is defined by function f of x= (2 times x) + 3, and if function f of a = 11, what is the value of a?

  (A) 4

  (B) 7

  (C) 11

  (D) 17

  (E) 25

  Explanation

  If the function f is defined by function f of x= (2 times x) + 3, and function f of a = 11, then function f of a = (2 times a) + 3 = 11. Therefore, a = (11 minus 3) over 2 = 4.

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