Question

if f(x) = 6x + 3 and g(x) = 5x – 4 what is f(g(x))

Answer 1

f(g(x)) = 6(5x - 4) + 3
f(g(x)) = 30x -24 + 3
f(g(x)) = 30x -21

Answer 2

Plug in g(x) for the x values in f(x)
6x + 3
6(5x – 4) + 3
30x - 24 + 3
30x - 21

Answer 3

What f(g(x)) is basically saying, take the y value you get from g(x) and plug that into f(x). Since we are talking generally, the "y value" of g(x) would be 5x - 4 nd plug that whole thing into 6x+3. (plug it into x)