Let f(x) = -4x + 7 and g(x) = 10x - 6, find f(g(x)).
-40x + 24
-40x + 31
-40x + 64
-40x + 70

- anonymous

Let f(x) = -4x + 7 and g(x) = 10x - 6, find f(g(x)).
-40x + 24
-40x + 31
-40x + 64
-40x + 70

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- anonymous

Do you know how to start it?

- anonymous

no

- anonymous

Alright g is on the inside, so you are going to put the function g, into the x of the function f

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## More answers

- anonymous

ok

- anonymous

Does that make sense? Are you able to do it now?

- anonymous

i dont even know what im looking at

- anonymous

haha alright here,
-4(10x-6) + 7
I put g(x) into f(x) now just solve

- anonymous

simplify not solve

- anonymous

how do i do that?

- Jasmineflvs

first analyze it the question is find f(g(x)) you already know that f(x) = -4x + 7 and g(x) = 10x - 6...but in the question there is no f(x) but there is just an f so what would you do to find f

- anonymous

simplify? just distribute the parenthesis

- Jasmineflvs

no not yet

- anonymous

yes you would, from what I said he would

- anonymous

I already went through putting the function g into the function f

- Jasmineflvs

you would take away the x from the equation so it would be f=-4+7

- Jasmineflvs

i think

- anonymous

;__; what do i do

- anonymous

no you would not

- anonymous

listen to me, you have f(x) = -4(10x-6) + 7

- Jasmineflvs

i'm sorry i'll try to find a link that can help you..kk..first what kind of problem is this

- anonymous

algebra

- anonymous

then you just simplify
f(x) = -4(10x-6) + 7
-40x + 24 + 7

- Jasmineflvs

i mean like equation....ect.

- anonymous

f(x) = -40x + 31, and that is your answer

- anonymous

so b

- Jasmineflvs

lets have two opinions first kk

- anonymous

No it is b I promise you

- anonymous

im going to cry

- anonymous

jasmineflvs I came up with one of the answers, you told him to eliminate the x which you DO NOT DO. I promise you it is b, I can show you again if you like

- Jasmineflvs

no lets get two opinions and dont cry

- anonymous

Why does he need two opinions? alright thebroski I want you to work it out yourself, start by putting g(x) into the x in f(x)

- anonymous

f(x) = -4x + 7 and g(x) = 10x - 6, so
g(x) goes into
f(x = -4(g(x) goes here) + 7

- Jasmineflvs

just a sec kkk i'll get it and if you were rigght ill give you a medal..kk

- anonymous

thats racists

- Jasmineflvs

???

- Jasmineflvs

how?? may i ask

- anonymous

.just a sec ((kkk))) i'll get it and if you were rigght ill give you a medal..kk

- Jasmineflvs

??? still dont understand why it is racist

- anonymous

Let f(x) = 2x + 2. Solve f-1(x) when x = 4.
1
3
4
10

- Jasmineflvs

let me guess you got the answer

- anonymous

no im just terrible at math

- anonymous

f^-1(x) is an inverse equation

- Jasmineflvs

that's okay

- anonymous

you need to switch the spots of x and y in the equation given and the solve for y, make sense

- anonymous

?

- Jasmineflvs

sorry i can't help you on functions i am behind in Algebra...I'm in 10th grade and I'm still in Algebra 1...sorwie

- anonymous

im in 10th to but math is not my subject i dont understand any of it except 2+2 thats all i understand

- Jasmineflvs

lolz

- Jasmineflvs

i'm getting a friend to help you on this one

- Jasmineflvs

@sasogeek @Hero @jim_thompson5910 @cwrw238 plz help him

- UsArmy3947

ok got the answer

- UsArmy3947

here f(10x-6)=31-40x

- anonymous

wut

- UsArmy3947

thats the answer

- anonymous

oh right

- UsArmy3947

sorry sir if u want help be more nicer

- anonymous

what do you mean

- anonymous

.Let f(x) = 2x + 2. Solve f-1(x) when x = 4.
1
3
4
10

- sasogeek

thebroski, if you're not going to put some effort into understanding the concept of the answer, no one can really help you. stop posting questions with multiple choice answers if you're not ready to learn

- UsArmy3947

dont say any thing without thinking this is a Moderator

- anonymous

i am trying to put effort into this its just that i have a problem with understanding things im just kinda slow.

- anonymous

btw i really dont care if ur the moderator it doesnt give you the right to ban someone because they need help with questions

- sasogeek

i'm not going to ban u for asking for help, in fact i'll help you if i can. it just doesnt seem like u really want the help though. sounds like u just want the answer cos it's quite a long thread and u still don't get it... reposting the question with the possible answers doesn't get u so far on this site. be patient, and try at least, to understand :)

- anonymous

ok

- UsArmy3947

ya i could also help u

- anonymous

Tango Hotel Alpha November Kilo Yankee Oscar Uniform

- UsArmy3947

what?

- anonymous

it means thank you

- UsArmy3947

no problem ill be leaving now bye

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