Given the parent functions f(x) = 5x − 1 and g(x) = 3x − 9, what is g(x) − f(x)?

Question

mallorysipp234 · Answer

g(x) − f(x) = 3x − 8 − 5x

 g(x) − f(x) = 3x − 10 − 5x

 g(x) − f(x) = −2x − 8 − 3x

 g(x) − f(x) = −2x − 10 − 3x

mallorysipp234 · Answer

and could you please explain, i dont understand.

jigglypuff314 · Answer

plug in  f(x)=5x-1 for f(x)  
and   g(x)=3x-9 for g(x)
so  g(x) - (fx) = (3x-9) - (5x-1)     simplify

mallorysipp234 · Answer

so out of (3x-9) - (5x-1) would i combine the like terms first?

jigglypuff314 · Answer

yes :)
but first I suggest you distribute the negative of   -(5x-1)

mallorysipp234 · Answer

okay so -5x + 1

mallorysipp234 · Answer

would it be letter C? :)

jigglypuff314 · Answer

mmm not quite :)
after distributing you get   3x - 9 - 5x + 1

mallorysipp234 · Answer

so then it would be A, after you add the -9 to the 1, right? making that a -8.

jigglypuff314 · Answer

yep :) that's what I got ^.^

mallorysipp234 · Answer

can you help me with a few more? its not much. Just 3. please!

jigglypuff314 · Answer

sure :)

mallorysipp234 · Answer

Given the function f(x) = 0.3(4)x, what is the value of f−1(6)?

 0.360

 1.242

 2.161

 2.312

jigglypuff314 · Answer

oh... is that an inverse?

mallorysipp234 · Answer

to be honest i have no idea.

jigglypuff314 · Answer

I'm confused on this one sorry :/