Answer:
The vertex is the point 
Step-by-step explanation:
we know that
The general form of an absolute value equation is

The variable a tells us how far the graph stretches vertically, and whether the graph opens up or down. The variables h, and k, tell us how far the graph shifts horizontally and vertically
The vertex is the point (h,k)
we have

Rewrite the expression (3x+1)

substitute



therefore
The vertex is the point 
see the attached figure to better understand the problem
D is ur answer bro good luck
(B) option is correct - not continuous at x = 0
If the object moves 170 meters in 20 seconds. There are 60 seconds in a minute. You have to multiply the 170 by 3. One minute it moves 510 meters