The phrase "variety of formulas" refers to a range or assortment of different types, styles, methods, techniques, approaches, or calculations that are used for various purposes. Full definition
That's also why there are a wide variety of formulas designed specifically for weight management. (petfoodtalk.com)
Employers use a wide variety of formulas to calculate the employer 401k contribution. (thecollegeinvestor.com)
«There is not one formula that is best for every baby,» notes Spradlin, «and there are a wide variety of formulas out there, because there isn't a one - size - fits - all solution.» (romper.com)