Question

Find the inverse of the function.
f(x) = the cube root of quantity x divided by eight. - 4

Answer 1

This is my answer f-1(x) = 8(x + 4)^3 , I just need to verify.

Answer 2

actually, the answer is
\[f^-1(x)=\frac{ 2 }{ \sqrt[3]{x} -8 }\]

Answer 3

sorry it took so long for me to respond, still getting used to the equation writer system

Answer 4

It's okay, but that is not one of my options.

Answer 5

f-1(x) = [8(x + 4)]3

f-1(x) = 8(x + 4)3

f-1(x) = 8(x3 + 4)

f-1(x) = 24(x + 4)

Answer 6

anyway, the easy way for you to check your answer is to take the equation and put it under 1, like this:

\[\frac{ 1 }{ \sqrt[3]{x/8} -4 }\]

Answer 7

I understand, it's just that your answer does not compare to the options at all.

Answer 8

yes, i noticed, but all of those answers are easily proved incorrect simply by giving x a value and working the equation out from there

Answer 9

i tested this 3 times, i made x = 4
then i tried x = 25
then i tried x=64

all of these show that my answer is correct and the all of the answer to the question are incorrect

Answer 10

tell me if im looking at this correctly
is it?

\[\sqrt[3]{x/8}-4\]

Answer 11

yes, thats what i thought

Answer 12

Where you have the a, it should be a 3.

Answer 13

it is a 3, it should be anyway i wrote it like that