Question 440171
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi
    g(x) = {{{highlight((x-1)/2)}}}  
and f(x) = 2x + 1 
 f(g(x)) = 2({{{highlight((x-1)/2)}}}) + 1   |substituting g(x) for x
 f(g(x)) = x - 1 + 1
 f(g(x)) = x