Logarthim/Exponential help..

Very quick one this:

$\displaystyle

3ln(x+7) = ln(x+7)^3

$

I am sure the above is correct, but does:

$\displaystyle

exp^ (ln(x+7)^3) = (x+7)^3 or (x+7)

$

(Please excuse the wrong sized bracket after the exp function - I can't seem to get it to go the right size in LaTeX)

I am assuming it's $\displaystyle (x+7)^3$ but have been given $\displaystyle x+7$ as an answer from an online calculator.

Please help - I'm rubbish at logarithms and need to improve asap due to a home study course coming up!