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Use differences to find the degree of a polynomial fitting the data. Then use a system of equations to determine the polynomial model. Round to two decimal places where necessary. 2 3 4 5 6 7 8 P(x) -11 -7 5 25 53 89 133 185 O A linear model fits the given data best, and its equation is: X+ 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: rt O A quartic model fits the given data best, and its equation is: xX + X + x + r+