Question

Find f(x) and g(x) so that the function can be described as y = f(g(x)). y = 7/sqrt 8x +10

Answer 1

Assuming you meant

$y = \frac{7}{ \sqrt{8x+10} }$

Then you can compose the function g(x)

$g(x)= \sqrt{8x+10}$

With the function

$f(x)= \frac{7}{x}$


Because f (g(x) ) means that you first find (calculte)     $\sqrt{8x+10}$       and second you divide 7 by g(x) to obtain 7 / [√(8x+10) ].