Mathematics
8 Online
OpenStudy (anonymous):
(Help please) Given f(x) = , solve for f-1(3).
2
4
6
8
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OpenStudy (stefrheart):
wait please rewrite it
OpenStudy (stefrheart):
the equation
OpenStudy (anonymous):
f(x)= 4x+1/3 solve for f- 1(3)
OpenStudy (anonymous):
this sorry
OpenStudy (stefrheart):
is it supposed to be x=3 right?
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OpenStudy (anonymous):
yea
OpenStudy (stefrheart):
first you need to replace the x with the 3
OpenStudy (anonymous):
I'm really not sure what to do so do I multiply 4*3 first?
OpenStudy (stefrheart):
yes so that would equal..
OpenStudy (anonymous):
12
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OpenStudy (anonymous):
then would i divide 12 by 3?
OpenStudy (stefrheart):
well isnt there a plus one?
OpenStudy (anonymous):
but don't you divide before adding?
OpenStudy (stefrheart):
true that is true but what are your choices?
OpenStudy (anonymous):
2
4
6
8
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OpenStudy (stefrheart):
hm...
OpenStudy (stefrheart):
can you take a pic of the whole question? everything?
OpenStudy (anonymous):
yea hold on
OpenStudy (stefrheart):
thank you
OpenStudy (anonymous):
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OpenStudy (anonymous):
sorry its so difficult to read
OpenStudy (stefrheart):
its okay i got 8
OpenStudy (stefrheart):
but i am not totally sure since it is \[f ^{-1}(3)\]
OpenStudy (anonymous):
ok thank you so much! I can understand simple equations but now that I'm in algebra 2 well.... anyways thank you.
OpenStudy (stefrheart):
yes but do you understand how i got 8? and welcome lol i took adv alg 2
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OpenStudy (anonymous):
no, but it'd be really helpful if you could explain it a bit because I got 5 and that's not an answer.
OpenStudy (stefrheart):
oh man i totally just lost my work but this is an odd problem that could either end up as 5 or 13
OpenStudy (anonymous):
hmm it was actually 2 which I have no idea how it's 2, but thank you for the help.
OpenStudy (stefrheart):
oh sorry :) its a weird question but its math all questions are weird