Question

Let f(x) = 9x - 2 and g(x) = -x + 3. Find f(g(x)).

-9x - 2

-9x + 5

-9x + 25

-9x + 27

Answer 1

I don't know how to solve both of them together :l

Answer 2

just substitute the x from f(x) for (-x+3)

Answer 3

i tried to solve f(x) and got x + 2 over 9

Answer 4

ok, you have on f(x) = 9x -2 now substitute the x for -x+3 and you have

9(-x+3) -2 now solve

Answer 5

ok first i need to distribute right?

Answer 6

correct

Answer 7

-x(9) + 3(9)

Answer 8

simplified to -x9 + 27?

Answer 9

remember the -2 so it is

-9x + 27 -2

Answer 10

yeah

Answer 11

alright so whats next?

Answer 12

that's it, so -9x + 27 -2 you can combine 27 -2 and you get
-9x + 25

Answer 13

sweet, thanks man! could u help me with 2 more?

Answer 14

sure