Please help me it is a quiz

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

How do the graphs of y = 1/x and y=5/x+6 compare?

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?