Solve the Linear Inequality $$\frac { x - 5 } { 15 } \geq \frac { x - 4 } { 20 } + \frac { 1 } { 60 }$$

Solve the linear inequality. Other than ∅, use interval notation to express the solution set and graph the solution set
on a number line.
- $$\frac { x - 5 } { 15 } \geq \frac { x - 4 } { 20 } + \frac { 1 } { 60 }$$

A) $[ 9 , \infty )$

B) $( - \infty , 9 ]$

C) $( 9 , \infty )$

D) $( - \infty , 9 )$

Use interval notation to represent all values of x satisfying the given conditions.