Determine the leading term, the leading coefficient, and the degree of the polynomial. Then classify the polynomial function as constant, linear, quadratic, cubic, or quartic?
a) g(x) = 1/23 x3 - 10x + 8
b) f(x) = 15x2 - 10 + 0.11x4 - 7x3
c) h(x) = 0.9 x - 0.13