What is a parllogarm and how to work on it

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

What is the equation of a line passing through (-6,5) and having a slope of 1/3

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.