User talk:Guna2103

May 2022
Hello, I'm Spf121188. An edit that you recently made to Cost curve seemed to be a test and has been reverted. If you want to practice editing, please use your sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! SPF121188 (talk this way) (contribs) 15:14, 11 May 2022 (UTC)