14. In the study of Combination and Permutation, the value of Co + Py is 15. The graph shown below represents a quartic ("quartic" means of degree 4) polynomial function with the equation in a form of P (x)=ax* +bx +cx' +dxte .where a is 1 or -1. All the roots of the function are integers. Then this function, when written in factored term, is If written in the standard form (as in P(x)), the coefficient c= _ 16. A pizzeria (Pizza shop) offers ten different toppings. Jacky wants to count the number of different 3-topping pizzas. You find that the number This is a (choose from "permutation" or "combination") problem because of different 3-topping pizzas are