Question 1181315
If 

{{{Q(x)=f(g(x)-h(x)) }}}
{{{f(x)=3x}}} 
{{{g(x)=log(2,x) }}}
{{{h(x) =log(2,x-4)}}}

Find the fully simplified expression for Q(x) and the value of Q(8).

{{{Q(x)=f(g(x)-h(x))}}} 
{{{Q(x)=f(log(2,x) -log(2,x-4))}}}
{{{Q(x)=f(log(2,x/(x-4)))}}}
{{{Q(x) =3(log(2,x/(x-4)))}}}

if {{{x=8}}}

{{{Q(8) =3(log(2,8/(8-4)))}}}
{{{Q(8) =3(log(2,8/4))}}}
{{{Q(8) =3(log(2,2))}}}
{{{Q(8) =3(1)}}}
{{{Q(8) =3}}}