It's arithmetic 100%!
Just take a look at it
15 + 9 = 24
24 + 9 = 33
33 + 9 = 42
u see the pattern right? It's +9!
yo answer should be 6 if im not mistaken
the correct answer is
the given polynomial is
the degree of the polynomial is the highest exponent which is 4.
the -4 is called the leading coefficient.
this polynomial has only one term so it is a monomial.
the correct answer is option c.