2. Examples To go on coop, a junior must maintain a minimum grade of 75 in both shop and related, and maintain an overall academic average of 75, with no failures. and not have been suspended from school during the previous 6 weeks.

3. Examples To graduate from Monty Tech, a student must take Gym or JROTC every year.

4. Conjunction A conjunction is composed of 2 sentences connected by the word and. Whether a conjunction is true or false depends on the 2 sentences: 5 < 8 and 2 + 9 = 11 true trueTRUE 6 – 4 = 2 and -3 > 1 true false FALSE 2 < 0 and 8 = 5 + 4 false falseFALSE

5. True or False? 5 – 2 = 7 and 6 – 4 = -1 -7 + 3 < -2 and 6 – 3 > 1 6 + 5 < 2 and 2 – 3 > 1 5 – 8 < 0 and 8 – 5 > 0

6. Disjunction A disjunction is composed of 2 sentences connected by the word or. Whether a disjunction is true or false depends on the 2 sentences: 5 > -2 or 8 + 2 = 10 true trueTRUE 5 * 8 = 40 or 9 – 10 = 1 true false TRUE 6 < -4 and 3 * 5 = 10 false falseFALSE

7. A disjunction is false . . . only if both sentences are false.

8. True or False? 5 – 2 = 7 or 6 – 4 = -1 -7 + 3 < -2 or 6 – 3 > 1 53 < 100 or 6 * 8 = 50 5 – 8 < 0 or 8 – 5 > 0

9. Truth tables http://en.wikipedia.org/wiki/Truth_table

10. Example In a laboratory stress test, a tube of material is found to fail if it is stretched to a length of more than 21.3 cm or compressed to a length of less than 19.7 cm. Use a conjunction or disjunction to describe the complete failure zone for the material. x < 19.7 or x > 21.3

11. Turn to p. 177 Do 1 -8, 1-14