Hey John,
I didn't know you don't teach anymore. Thank you for your help on my first year calculus course. After I gave you a call on missing the exam that morning, I was managed to re-arrange another time to write the exam. Of course, I did it with a legit doctor's notes. AND, I got an A- after the exam. Thank you for your help again, I thought I was going to fail the course after getting 46% on my first midterm.