thank you
What steps do you think are wrong?
Have you attempted this question at all?
Why don't you interact with answerers here to get more meaningful answers. Answers that you will actually learn from.
I have attempted it and i got it incorrect my answers were
helen got it incorrect in the last step and stephen makes a mistake with ln2
You are right about Helen - last step is wrong.
And yes the very first thing Steven did showed a total lack of understanding :)
Good work!
+118608 
