Question

5. What is the solution of |3x-3|_<18?
A) -18_< x _<18
B) -15_< x _<21
C) -7_< x _<5
D) -5_< x _<7

Note: _< _> mean less than or equal to and greater than or equal to. (I didnt have a way to type that out.

Answer 1

Answer : D

WORK...
$|3x-3| \leq 18$

PART 1:
$3x-3 \leq 18 add 3 on both sides... 3x \leq 21 divide by 3 on both sides... x \leq 7$

PART 2:
$3x-3 \geq -18  add 3 on both sides... 3x \geq -15 divide 3 on both sides... x \geq -5$

plug both answers together..
$-5 \leq x \leq 7$