Formulas or formulae?

[boogiewoogie]

I believe its the latter to mean the plural of formula but I have also seen the first used. What do Pendants think?

It actually can be both apparently!

oops, apostrophe missing in it's!

it may depend on the context.
If you are talking about science,I would say formulae.
If it is formula milk, formulas

Agree with Tommy - we have lots of Latin words with non-Latin plurals, so there's no "rule" as such, but some stay in formal jargon. Probably both are acceptable.