Thank you for reaching out to us with this. I investigated what was going on, and it appears the 6th edition of "Calculus: Single Variable" came out in 2012, and the 7th is due out late this year.
The fifth edition is out of print and the companion site is no longer maintained. It was published in 2008.
If you are looking for a specific resource, I can try to locate it for you, but will more than likely not have access to it, as it almost a decade old.
Tom with Wiley
I lost the chapter 9 and chapter 10 answer keys and just want to reprint
them. If they are unavailable, I bet most of the problems from both keys
would (more or less) match up with the newer versions of the text. So if
it's easier to grant me access to the 6th edition, chapters 9 and 10, I bet
it would do the trick. Thanks so much for getting back to me!
Unfortunately, the answer keys are not available for the 6th edition. So, I reached out to the editorial department, and should they still have the answer keys for chapter's 9 and 10 for the fifth edition, I'll get them to you.
What is the best email address I can send these files to, if they're available? (Don't worry, I'll delete it from this forum as soon as I grab it off.)
-Tom with Wiley
This email is the best to reach me at... [EMAIL REMOVED]
Thank you for your time and effort!