Para enriquecer la tierra de un jardín se siembran lombrices en ella si la cantidad de lombrices y que se requieren depende del número de plantas x, y esto puede calcularse empleando la expresión y=15x,¿que valor representa el valor 15 en a expresión anterior?​

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.