Answer:
13
Step-by-step explanation:
I assume that we are talking about the points and lengths of a number line.
A is the starting point (-8).
B is the mid point (-4).
C is the end point (5).
To find the distance of AC, we take the absoulte value of any value if its negative and add.
|-8| + 5
8 + 5
13
Best of Luck!