Variable exponents.
Yes, it is.
A binomial and possibly a fraction.
Yes, it is.
Monomial. Monomial. Monomial. Monomial.
true
It is a polynomial (monomial). It is a polynomial (monomial). It is a polynomial (monomial). It is a polynomial (monomial).
Monomial.
Yes.
Yes, it is a monomial.
15t is a monomial
Since a monomial is a term, any real number is is a monomial.