The math test?

Question

There it is, right under the 3x! 

Answer 1

Brain out of order ... - just into nonsense ...


Adding the G to the F, instead of complicating things?

But H, F and GF have many definitions ...
http://www.abbreviations.com/H
http://www.abbreviations.com/F
http://www.abbreviations.com/GF

further:
https://en.wikipedia.org/wiki/7
http://www.yourdictionary.com/3x
http://www.urbandictionary.com/define.php?term=3x
http://www.yourdictionary.com/pc-9x
https://www.internetslang.com/_2B1-meaning-definition.asp

Answer 2

  Looks like that person might want to take another kind of test also! LOL