Question 111517
{{{f(x) =5x - 1}}}
To find f(a-2), substitute (a-2) wherever you see x.
{{{f(x) =5x - 1}}}
{{{f(a-2) =5(a-2)-1}}}
Simplify
{{{f(a-2)=5a-10-1}}}
{{{f(a-2)=5a-11}}}