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If x=5, then what is the f(x) [f(x) means function of x]?

A: 11

B: 12

C: 13

D: 14

The answer is A. You take the number you were given, multiply it by 2, then add 1. With 5, you would to 2*5+1=11. With 3, do 2*3+1=7. With 9,do 2*9+1=19.

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Q: What is the function of x?
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What is function notation in math terms?

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The first part of the question is false, and the correct answer is that an even function of minus x equals the function positive x. This follows from the very definition of an even function. The second part of the question is false, because the truth is that the composite function results from taking the function of x within the function g.


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