When+is+a+compound+inequality+a+betweenness+Set+3

When is a compound inequality a betweenness? How can you go back and forth between writing the inequality as a betweenness and two separate inequalities?Give a few examples to illustrate.

Question: 1. If a compound inequality is a betweenness, it is: a) an "or" statement b) an "and" statement

2. How would you transform 39 and 4x<18 into a betweenness? (Remember to simplify)

-Erica

Answer: 1. b- an "and" statement

2. x 3

3. (9/4)<x<(9/2)