Question

Solve: |x + 3| = 3
A. {0, 6}
B. {0, -6}
C. {-6, 6}
D. {-6}

Answer 1

|x + 3| = 3
x+3 = 3 OR x+3=-3
x=0 x=-6

{0, -6}

Answer 2

|3r - 12| = 0
3r -12 = 0
3r=12
r=4

D