How do you solve the problem 9/10-1/3

you must make there be a common denominator(lower number) so 9/10*3(otherwise known as 3/3)=27/30 1/3*10(otherwise known as 10/10=10/30 now we do the math 27/30-10/30=17/30 when you add or subtract fractions you always find a common denominator then only add or subtract the numerator (top number)

All except for b, because polynomial functions can be quadratic, cubic, witticisms and etc only non negative exponents of negative it is not a polynomial function