If its plural (los/las/ more than 1 thing) its gustan
If its singular(la/el/ 1 thing) its gusta
Mi mama es la persona mas trabajadora de la familia.
"Mama" (mom) can be replaced by the pronoun "ella" (she). The correct conjugation for "ser" in the el/ella/usted form is "es".
Hope this helps!!
1- Yo uso la computadora 2 o 4 horas diarias
2- Los lavo almenos 3 veces a la semana
3- 1 vez a la semana
4- 2 veces al día
5- almenos 2 veces al día