How much wood could a would chuck chuck if a wood chuck could chuck wood

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

9/10 divide by -3/15 as a mixed number

Which graph represents the equation y =4x