primenjivati

1. to apply; to use
   U radu primenjujemo najnovije metode. — We use the latest methods in our work.
   Sud mora da primenjuje zakon na sve jednako. — The court must apply the law equally to everyone.
2. (primenjivati se) to be applied; to apply
   Ovo pravilo se primenjuje samo na nove ugovore. — This rule applies only to new contracts.

The perfective is primeniti; 'to something' is na + acc.