Use differences to find the degree of a polynomial fitting the data, then use a system of equations to determine the polynomial model. 2 3 4 5 6 7 8 P(x) 37 113 241 433 701 O A linear model fits the given data best, and its equation is: O A quadratic model fits the given data best, and its equation is: x x + O A cubic model fits the given data best, and its equation is: + x O A quartic model fits the given data best, and its equation is: 4 + + x + r+