how can i solve for x: lnx=2?

Answer 1

It helps to understand just what a natural log is.

In ( x ) = q because e^q = x
where e is the base of the natural log.

Using this property...

ln ( x ) = 2

e ^ ( ln ( x ) ) = e ^ 2

x = e ^ 2

Answer 2

e^2=x
7.389=x

Answer 3

http://en.wikipedia.org/wiki/Natural_log

easily