Which number line represents the solution to 5 x < 30?

C
5x < 30
Divide each side by 5 to find x
x < 6
The number line needs to show the x represents any number less than 6 (3, 5.5, -1, etc)
C is correct because there is an open circle around 6, and then an arrow pointing towards numbers smaller than 6.

If x is less then or equal to six, you draw a filled in circle around six to show that x can be 6.
Because x is less than 6 and not equal to 6, you draw an open circle to represent x can get very close to 6 (ex. 5.9, 5.999) but cannot equal 6.

The line has to be pointing leftwards because the numbers are less then six in that direction. X can be any number smaller than 6, which is how by the leftward arrow

Answer(a) one needs to learn from experts and be determined to be the best in the field;