Question

Antonio has $15 to spend on a set of colored pencils for his art class. Which number line represents the amount that he can spend on the pencils?


A number line between 0 and 24 in increments of 3. There is a bold line start with a closed circle at 0 and ends with an open circle at 15.


A number line between 0 and 24 in increments of 3. There is a bold line start with a closed circle at 15 and heading rightwards.


A number line between 0 and 24 in increments of 3. There is a bold line start with a closed circle at 0 and ends with a closed circle at 15.


A number line between 0 and 24 in increments of 3. There is a bold line start with an open circle at 15 and heading rightwards.

Answer 1

The correct choice is the third one: the segment from 0 to 15 with closed circles at both ends.

Reason: Antonio can spend any amount from $0 up to and including $15, so the interval is [0,15]. Closed circles show the endpoints are included; the line must stop at 15 (not continue rightward).