Sum interior of polygon help!

Which rational number could be graphed between -4 and -5

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?