Pls answer this question

There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0