Determine whether each function is a polynomial function or not. If it is a polynomin function, give its degree. 1. m(x) = 6x3 - 7x5 + 12x2 - 1 7. n(x) = nx3- 1 2. a(x) = 3x - 4x2 + 12 3 8. 1(x) = 8x3 - 2x2 + 6 3. t(x) = 12x2 + X 9. u(x) = 62x3 - 91x 4. h(x) = - 2x3 10. r(x) = 3x7 _ 7 8x X 7x9 + 4x3 11. k(x) = 9x7 -3 5. m(x ) = 4x5 5 12. s(x) = 13 6. a(x) = 15 11 Then determine