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If f(x)=3(x+5)+(4/x), what is f(a+2)

 

 

A. 3(a+2)+(4/a)+2

B.3(a+7)+(4/a+2)

C.3(f(a)+5)+(4/f(a)+2)

 Sep 15, 2018
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\(f(a+2) = 3((a+2)+5) + \dfrac{4}{a+2} = 3(a+7) + \dfrac{4}{a+2} \\ \\ \text{i.e. choice B}\)

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 Sep 15, 2018

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