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Mazyrski [523]
3 years ago
11

Need help understanding this problem please

Mathematics
1 answer:
faust18 [17]3 years ago
7 0

f(g(x)) is a composite function:

f(g(x))=f(\sqrt{x+5})=2\sqrt{x+5}-1

Plug in <em>x</em> = 4:

f(g(4)) = 2\sqrt{4+5}-1=2\sqrt9-1=2\cdot3-1=\boxed{5}

so the answer is C.

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Step-by-step explanation:

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  see below

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