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
The dimensioning system in which <span>numerals are placed in line with the dimension line is called the <u> aligned </u> system. In the <u> unidirectional</u><u> </u>system all numerals read from the bottom.</span>
