Please correctly answer all four questions. I will make braininess.

How many solutions does the nonlinear system of equations graphed below have?

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

Having a hard time understanding this question (see attachment).