Question

can someone explain how I do this? please!

Let f(x) = -4x + 7 and g(x) = 10x - 6, find f(g(x)).

Answer 1

Start by straight out replacing the g(x)
so you get f(10x - 6)

Answer 2

ok now what?

Answer 3

This means that for f(x) = -4x + 7

We replace the x next to the -4 with (10x - 6)

Answer 4

You get... using the proper notation
f(g(x))= f(10x-6) = -4(10x-6) +7

Answer 5

whats the first step in solving this?
step by step PLease

Answer 6

The first thing you do is replace the g(x), to get
f(10x-6)

Answer 7

then

Answer 8

Now using what we know about plugging values into functions...
we look at f(x)
and we get f(10x-6) = -4(10x-6) + 7

Answer 9

All that is left is to simplify

Answer 10

ok ill try that thanks

Answer 11

Let me know if you need some help with that

Answer 12

so I simplified the right side and got f(10x-6) = -40+30 ??

Answer 13

-40x+30**

Answer 14

Hold on was afk

Answer 15

Pretty close
Just your algebra
It is -40x + 31