Hi people, hoping you can help me understand polynomial functions.

I have been given an example which is the following:

p(x) = 2x^3 + 3x + 1

Coefficient of x^3: 2 - I understand why this is a 2 because it is in front of x^3.

Coefficient of x^2: 0 - I understand this as there is no x to the power of 2.

Coefficient of x^1: 3 - I see why as 3 is in front of the single x.

Coefficient of x^0: 1 - However, I do not see why this is?