

I enjoy these games where you help everyone earn a discount!..
Added 2024-02-29 22:19:12 +0000 UTCI enjoy these games where you help everyone earn a discount! For each person who sends me the correct answer to the question below (via direct message, NOT as a public comment), I'll take $1 off the price wall of the next $15 set I send. Everyone benefits from you using your brains! The question: What is the (fully simplified) derivative of y=tan(x)-x?