Question

if f(x) = 3x+2 and g(x) = x^2 +4, what is f(g(x))?

Answer 1

So for these composite functions...you look at the inside function first (g(x)) ...and you plug that into your outside function f(x) anywhere you see an 'x' in that f(x)

so if you take your g(x) x² + 4

and plug that into f(x) anywhere you see an 'x' you get

3(x² + 4) + 2

now simplify it