Question

find the domain.
p(x) = 2x - 9

Explanation:

Step1: Identify function type

The function $p(x)=2x-9$ is a linear polynomial.

Step2: Determine valid x-values

Polynomial functions have no restrictions on $x$; all real numbers are allowed.

Answer:

All real numbers, or in interval notation: $(-\infty, \infty)$