Let f(x) = 4x – 3 and g(x) = 3x + 2. g(f(4)) = ?

Question

Let f(x) = 4x – 3 and g(x) = 3x + 2. g(f(4)) = ?

Answer 1

f(4) = 4(4) - 3)

f(4) = 16 - 3

f(4) = 13

g(f(4) = g(13

g(13 = 3(13 + 2

g(13) = 39 + 2

g(13) = 41

OR

g(f(x)) = 3(4x - 3) + 2

g(f(4)) = 3( 4(4) - 3) + 2

g(f(x)) = 3(16 - 3) + 2

gf(4)) = 3(13) + 2

g(f(4)) = 39 + 2

g(f(4)) = 41