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.

September 30

Homework:

• Mark on the number line all numbers x for which x/2+3 is an integer.
• Find the point that splits the interval [-6,8] in relation 2:5.
•  How many numbers from 000 to 999 have no even digits?
• Pete earns less than twice what John earns, and John earns less than half of what Dan earns. Who earns more, Dan or Pete?