Question

If f(x) = log2 (x + 4), what is f^-1(3)?

0
2
4
8

Answer 1

@Luigi0210

Answer 2

@pooja195 @robtobey @agent0smith @surjithayer @sleepyjess @Somy @Gabylovesyou @ganeshie8 @Hero

Answer 3

@undeadknight26 the it is 4 = 3 then you put it in a fraction and it would be 2

Answer 4

Alright thanks :)

Answer 5

Your sure its 2 and not 4 right O.o

Answer 6

@Luigi0210 come hereee

Answer 7

@undeadknight26 im 100% sure

Answer 8

If I remember correctly isn't \(\Large log_{2} (x+4) =c \) the same as \(\Large2^c=(x+4) \) ?

Answer 9

So the exponential form is the inverse. Meaning that since c=3 \(\Large 2^3=(x+4) \)

Which is \(\Large 8=x+4 \), so \(\Large 4=x \)

Plugging it into x would of given us: \(\Large 2^c=7 \) which I don't seee as an option so...

Answer 10

Its 4.../.-
I shoulda went wif 4 -_-

Answer 11

x.x im so dumb here

Answer 12

i cant belive you took my medal away

Answer 13

LOL well your answer was wrong so ._.