Question

I can't remember how to do this problem..

Answer 1

i think it is b

Answer 2

but check with @VeritasVosLiberabit

Answer 3

b is correct

Answer 4

Oh wrong problem.. Hold on.

Answer 5

so this is the reverse of the one you posted essentially
8^4=x

Answer 6

8^4=4096..

Answer 7

do you have the answer key bambi?

Answer 8

that should be right but I need to just check in case

Answer 9

nevermind that is the answer. I just used change of base and it works as well
4096

Answer 10

I agree with the answer, but "how to do this problem" should require steps shown... We have
\(\log_8 x = 4 \)
Let's make both sides powers of 8.
\( 8^{\log_8 x} = 8^4 \)
\(f(x) = 8^x\) and \(g(x) = \log_8 x\) are inverse functions by definition, so their composition \(f(g(x)) = 8^{\log_8 x} \) is equal to x. That solves for x right there, and the right side is the value.
\(x = 8^4 = 4096 \)
And if any part is unclear here, feel free to ask for clarification! Or, you might have an alternate approach. :)

Answer 11

I need help urgently.....

Answer 12

make a new thread and I can help you @xXxBambyGirlxXx