The function domain: x<0 or 0<x<4 or x>4 (?) I believe....
Answer:
See attachment
Step-by-step explanation:
The given inequality is 
By the definition of the absolute value function, we obtain the compound inequality.

When we simplify we get:

The graph for the solution set is shown in the attachment
Answer:
19.0, 19.5, 19.054, 19.0541
Step-by-step explanation: