If f is the function defined by , what is the value of
?
-
A
-
B
-
C
3
-
D
9
Correct answer: C
Explanation
Choice C is correct. If , then
.
Choice A is incorrect and may result from not multiplying x by 2 in the numerator. Choice B is incorrect and may result from dividing 2x by 3 and then subtracting 1. Choice D is incorrect and may result from evaluating only the numerator 2x – 1.
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