A car salesman sells a 23000 car and makes a 1,265 cosmission. What is the cosmission rate?

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

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !