Questions involving mathematics or equations can be written using mathjax (which will make the equations look fancy). To indicate an equation, type the equation between backticks (` `). For exponents or superscripts, use ^, for subscripts use _. Set off denominators with parentheses. For example, `a^2 + b^2 = c^2` will show up as \[a^2 + b^2 = c^2\].
Lists: You can make lists by starting the list with [LIST] and ending with [/LIST]. Each separate item in the list should start with [*] and end with [/*] (including the brackets).
Subscript and Superscript: Subscript can be done either with mathjax (above) or by surrounding the subscript with underscores (_). Superscripts are the same, but use carets (^). None of these marks will show up in the assignments--the text will be properly typeset.