Question

PLEASE HELP!!!

Solve 4^x = 12

a.) x ≈ 0.27
b.) x ≈ 0.56
c.) x ≈ 1.79
d.) x ≈ 19.93

Answer 1

None of the answers are correct.

Answer 2

i copied and pasted the question and answers directly form the site.

Answer 3

sry but these are all not it

Answer 4

That's better.

Answer 5

\(4^x = 12\)
Take log of both sides:
\(\log{4^x} = \log{12}\)
Use law of logs:
\(x \log {4} = \log{12} \)
Solve for x

Answer 6

One of the answers is correct.

Answer 7

Ah yes! I must have missed the power sign!
[problem with computers and maths!]

Yes, one of the answers is correct!

Answer 8

@sarahusher You didn't miss the power sign. It was added later.

Answer 9

\[b^x=A\iff x=\frac{\ln(A)}{\ln(b)}\] and a calculator

Answer 10

http://www.wolframalpha.com/input/?i=log%2812%29%2Flog%284%29

Answer 11

looks to be about 1.79...