Final answer:
The distance MN between points M at -25 and N at 119 on the number line is found by calculating the absolute value of the difference between the two points, which is 144 units. Therefore, the correct answer is 144 units.
Step-by-step explanation:
To find the distance MN on the number line between points M and N, where M is at -25 and N is at 119, you simply calculate the difference between the coordinates of N and M. Since N is to the right of M on the number line, the distance MN (or segment MN) is the absolute value of the difference between the two points. Therefore:
MN = |N - M| = |119 - (-25)| = |119 + 25| = |144| = 144
The distance between the two points is 144 units, which is a positive number. Thus, the correct answer is B) 144 units.