Question 37986
What {{{f(g(-1))}}} means is take g of -1 and then take the solution of g of -1 and use it as the input x for the function f:

{{{g(-1)=2(-1^3)}}}
{{{g(-1)=2(-1)}}}
{{{g(-1)=-2}}}
{{{f(-2)=4(-2)-3}}}
{{{f(-2)=-8-3}}}
{{{f(-2)=-11}}}

{{{f(-1)=4(-1)-3}}}
{{{f(-2)=-4-3}}}
{{{f(-2)=-7}}}
{{{g(-7)=2(-7^3)}}}
{{{g(-1)=2(-343)}}}
{{{g(-1)=-686}}}

Hope this helps, feel free to contact me with any further questions,
lyra