From the definition of absolute value, 3|x| = when x≥0 and 3|x| = when x<0.

1) 3|x|=[0; infinity). there is no infinity sign lol

2) 3|x|= (0; infinity)

answer: what if i dont want to show my work boi.

step-by-step explanation: im watching dbz and eating popcorn leave meh alone