What does it mean if ? It means that if the expression between the absolute value bars
is positive, it’s greater than +8 or, if the expression between the bars is negative, it’s less than −8. In
other words, is outside the range of −8 to +8:
The answer is (C).
In fact, there’s a general rule that applies here: To solve an inequality in the form |whatever| < p,
where p > 0, just put that “whatever” inside the range −p to p:
1. Which of the following is the solution set of ?