Answer: lim x--> 0 f(x) does not exist.
Explanation:
We need to evaluate both the right and left hand limits in this problem.
lim as x--> 0 from the left = 5(0) - 8 = 0 - 8 = -8
lim as x--> 0 from the right = |-4-(0)| = |-4| = 4
Since the left and right hand limits are not equal (-8 does NOT equal 4), the limit does not exist.