F(x)=x^2+6 and g(x)=2x-1 g[f(x)]= a.4x^2-4x+7 b.2x^2+11 c.2x^2+5

g( f(x) ) = 2x^2 + 11 (Answer choice B)

Step-by-step explanation:

g( f(x) ) involves using the function f(x) = x^2 + 6 as the input to g(x).

Here, g(x) = 2x - 1.  Replace the x in g(x) by "f(x)" and the x in 2x - 1 by x^2 + 6.  Then we have g( f(x) ) = 2[x^2 + 6] -1.  This can be simplified, as follows:

                                     = 2x^2 + 12 - 1, or 2x^2 + 11.  This is answer choice B.

answer: c. is your answer

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