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)

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.