Question

Solve 4^x=20 Round to the nearest ten thousandth

Answer 1

do you know how to convert it to logarithmic form?

Answer 2

No.. my teacher sucks. :)

Answer 3

lol

Answer 4

take log number on log the base and it will be x=log20/log4

Answer 5

\[4^x=20\]
\[x \log 4 = \log 20\]
\[x=\frac{\log20}{\log 4}\]
Basically, log both sides. Usually the log rule, you can take the exponent x and place it as a coefficient. Then divide both sides to solve for x.

Answer 6

Okay

Answer 7

lol when i said change to log form i meant \[\LARGE a^x = b \Longleftrightarrow \log_a b = x\]

Answer 8

Ohh I think I learned that. I think. lol

Answer 9

well you end up with \[\large \frac{\log 20}{\log 4}\] anyway..have you learned that?

Answer 10

yea.. I think so. But we learn stuff so quick i never get a chance to fully understand.

Answer 11

I got the answer now :)