MathML question about fonts

Hello, I just bought a copy of scrivener, I was trying to add equations in the only format available MathML ( :cry:), I had to right click instead of double click to edit this, any way, is there a way I can choose which font to use for the equations ? I also tried compiling to MS Word (.docx) but the font is the same basic font.
Also, how could I gain trust level 1 to paste images in the posts ? Thank you in advance