Answer:
Option D.Draw an open circle on 3 and shade to the left.
Step-by-step explanation:
we have
[tex]x-6 < -3[/tex]
Solve for x
Adds 6 both sides
[tex]x< -3+6[/tex]
[tex]x< 3[/tex]
The solution is the interval (-∞,3)
All real numbers less than 3
In a number line the solution is the shaded area at left of x=3 (open circle)
The number 3 is not included in the solution
therefore
Draw an open circle on 3 and shade to the left