What is another way to write 9 times 200

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

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?