Question

Find f(x) and g(x) so that the function can be described as y = f(g(x)).

y = nine divided by square root of quantity five x plus five.


Answers:

f(x) = nine divided by square root of x., g(x) = 5x + 5

f(x) = square root of quantity five x plus five., g(x) = 9

f(x) = nine divided by x., g(x) = 5x + 5

f(x) = 9, g(x) = square root of quantity x plus five

Answer 1

I need helps pleaseeeeee!!!

Answer 2

What have you attempted thus far?

Answer 3

nothing, im super lost.

Answer 4

let f(x)=
\[9/\sqrt{x}\]
and \[g(x)=5x+5\]
so f(g(x)) means that you are plugging g(x) into f's x. so you end up with
\[f(g(x))=\frac{ 9 }{ \sqrt{5x+5} }\]

Answer 5

but whats f(x) & g(x)?

Answer 6

thats another way to write y but using different letters lets you know that they are two different functions.

Answer 7

oh okay, I get it now. Thank you!!