Hey there! Great question. The plural of "formula" is "formulas." Think of it like this: if you have one formula, you call it a singular noun. But if you have two or more formulas, you use the plural noun "formulas." It's just like how one bird becomes many birds, or one apple becomes many apples.
Also, keep in mind that there are some words in English that have irregular plural forms, like "sheep" and "children." But "formula" is not one of them. So, when you need to refer to more than one formula, simply use "formulas."
I hope that helps! Happy language learning.
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