October 7

Recall that |x| is the distance from x to 0, that is x if x is a positive number, and -x if it is negative.

Homework

• Rope was folded in 2 three times and cut through (resulting in 9 pieces). One of the pieces is 2 in, another 3in. What was the length of the rope? 
• Mark on the real line all the points a where 
1. |a-5|>3;
2. a+|a|=0;
3. |a-2|+|a-2|=3.