Can someone help me with these problems?
http://i.imgur.com/rftbtsQ.png
http://i.imgur.com/9qN3QMz.png
http://i.imgur.com/eFZAs25.png

Question

Can someone help me with these problems? 
http://i.imgur.com/rftbtsQ.png
http://i.imgur.com/9qN3QMz.png
http://i.imgur.com/eFZAs25.png

jhonyy9 · Answer

1. what is your opinion about second ?
2. what is your opinion about 3rd ? so because there is a fraction and you know it sure that a fraction not can having denominator never zero - yes ?
3. what is your opinion about 4rd ?

rhondasommer · Answer

4rd?

mathmale · Answer

This topic is "composite functions," or simply "compositions."

You are to use the 2nd function, g(x), as the input to the first function, f(x).  Have you any previous experience with composite functions?

Once you've fuond f( g(x) ) algebraically, substitute -5 for x and simplify the result.  That's the goal of this problem.

123qwet12 · Answer

I did substitute and I got -49

solomonzelman · Answer

What was your expression for f(g(x)) ?