I know now how to solve for f(x), but I am really confused when you have f(g(x). for example, I answered the first part, but am unsure of where to go for the next one. The problem reads like this,

f(x)=2x-3 and g(x)=x+1

now where I am confused is when the problem asks for something like this,
f(g(4) I know, or at least I think I know that you plug the four in where the x is, but how do I set it up to make it look right. I guess what is confusing me is the g.

albear

ok sub 4 into g(x) and you get = g(4)

then sub that answer into f(x) where g(4)=x understand ?

albear

(with numbers)

let x=4

g(x)=4+1=5

sub into f(x)

f(g(4))=(2*5)-3=7

Capuchin

I thought I answered this before?

Capuchin

Yes here: http://www.askmehelpdesk.com/mathema...ons-99350.html

You asked the same question a week ago, and you agreed with my answer!!!

What are you finding confusing?

Capuchin

Melzy, if you don't understand, don't repost the question, instead you can reply in the same thread and ask for clarification