g[f(5)] , if f(x) = x + 1 and g(x) = 3x - 2
So, since f(x) = x + 1 we want to find f(5) , i.e. when x = 5.
f(x) = x + 1
f(5) = 5 + 1 = 6
So, g[f(5)] = g[6]
So, since g(x) = 3x - 2 we want to find g[6] , i.e. when x = 6.
g(x) = 3x - 2
g(6) = 3×6 - 2 = 18 - 2 = 16
So, g[f(5)] = 16