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Mathematics 6 Online
OpenStudy (anonymous):

HELP PLS

OpenStudy (anonymous):

undeadknight26 (undeadknight26):

No idea sorry...I forgot how to do this...

OpenStudy (anonymous):

ok ty! :)

OpenStudy (anonymous):

@e.mccormick

OpenStudy (anonymous):

@ShadowLegendX @Reaper534

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

@petiteme

OpenStudy (anonymous):

first find the f^-1(x) ..

OpenStudy (anonymous):

we have y = x+ 9 to find f^-1(x) first exchange x & y so we get x = y + 9 now solve this equation for y so we will get y = x - 9 now replace y by f^-1(x) so f^-1(x)= x-9 now find f^-1(5)= 5 - 9 = -4 So to find (fof^-1)(5)= f(f^-1(5)) = f(-4) = -4 + 9 = 5

OpenStudy (anonymous):

Have you understood ??

OpenStudy (anonymous):

yes ^.^

OpenStudy (anonymous):

so wait it equals 5? :o

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

but it not in the choices o.O

OpenStudy (anonymous):

see

OpenStudy (anonymous):

Wait a bit ..

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

I have got 5 , Please check options LOl :)

OpenStudy (anonymous):

the options are A.4 B.0 C.6 D.10 :/

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