Question

How do you solve `|- 9+ 3n | - 1> 8`?

Answer 1

Solution: `n<0 or n>6` ; In interval notation: `(-oo, 0) uu (6,oo)`

Explanation:

1) `|-9+3n| -1 >8 or |-9+3n| >9 or -9+3n > 9 or 3n > 18 or n>6` OR

2) `|-9+3n| -1 >8 or |-9+3n| >9 or -9+3n < -9 or 3n < 0 or n <0`

Solution: `n<0 or n>6` ; In interval notation: `(-oo, 0) uu (6,oo)`[Ans]