Question 97747
Make it easy on yourself and use 0 in all the equations. 

{{{f(x)=4-3x}}}
{{{f(0)=4-0}}}
{{{f(0)=4}}}

{{{g(x)=x^2-4}}}
{{{g(0)=0-4}}}
{{{g(0)=-4}}}

{{{h(x)=2x^3 -x^2-3x}}}
{{{h(0)=0}}}

You can use other values since it specifie you can. But, it does say that "or equal to 0" this makes this pretty quick to solve.

good luck,
garrett w.