Question

For which pairs of functions is (f o g)(x)=12x

Answer 1

Well, you can have lots of pairs of functions f and g.

`(f \circ g)(x) = f(g(x)) = 12x`
You can take

`f(x) = 12x \text{ and } g(x) = x`
or

`f(x) = x \text{ and } g(x) = 12x`
or

`f(x) = (x)/(2) \text{ and } g(x) = 24x`
or ...