Production Optimization Using Fuzzy Linear programming Method (Case Study: UMKM Untir-untir and Raja Manis Factory) - Nababan, Esther S.M.; Sihaloho, Agnes; Husna, Khatimatul; Ilham, Rafida (Journal of Research in Mathematics Trends and Technology; Vol. 4 No. 2 (2022): Journal of Research in Mathematics Trends and Technology (JoRMTT, 2022)