For the given functions f and g find g o fx fx 4x2 6x 5 g
     For the given functions f and g, find (g o f)(x).  f(x) = 4x^2 + 6x + 5, g(x) = 6x - 8  A. 24x^2 + 36x + 22  B. 4x^2 + 6x - 3  C. 4x^2 + 36x + 22  D. 24x^2 + 36x + 38 
  
  Solution
Given f(x)= 4x^2+6x+5, g(x)= 6x-8
gof(x)= g(f(x)) = g(4x^2+6x+5)
=6(4x^2+6x+5)-8
=24x^2+36x+30-8
Therefore gof(x) = 24x^2+36x+22
Answer is option A

