Write the Domain in Interval Notation $$p ( x ) = 7 x + 1 ; x \geq 0$$

Multiple Choice

Write the domain in interval notation.
- $$p ( x ) = 7 x + 1 ; x \geq 0$$

A) $\left( - \infty , - \frac { 1 } { 7 } \right) \cup \left( - \frac { 1 } { 7 } , \infty \right)$
B) $( - \infty , \infty )$
C) $[ 0,4 )$
D) $[ 0 , \infty )$