Determine the degree of each of the following polynomial functions.
a. f(x)=1+x+x²+x³
Degree of f:
b. g(x)=x⁸-2x²-6
Degree of g:
c. h(x)=x⁵+2x⁹+1
Degree of h:
d. j(x)=x²
Degree of j: