by tommywallach Thu Apr 07, 2016 3:06 pm
You do understand that the book has about 800 question #22's, right? Next time, please post the entire question (and make sure the title specifies chapter and page). THEN post every step of your own math, showing me how you reached the answer you got. That way I can see where your work went wrong, instead of simply duplicating the explanation in the back of the book.
Thanks!