Hello again! I would appreciate help very much on this. Thank you!

1) For which values of x is y equal to 16 in the equation y=|3x+4|?
A) -60 and 36
B) -36 and 60
C) -20/3 and 4
D) 20/3 and 4

well, you need

3x+4 = 16
or
3x+4 = -16