1. Prerequisite Skills VOCABULARY CHECK Copy and complete using a review word from the list; perimeter, distributive property, like terms, inequality, reciprocal. 1. The ? of a figure is the sum of its side lengths. 2. The four ? symbols are,, and. < > ANSWER inequality perimeter ANSWER

2. Prerequisite Skills VOCABULARY CHECK 3. To divide by a fraction, you multiply by its ?. ANSWER reciprocal 4. Terms that have identical variable parts raised to the same power are ?. like terms ANSWER Copy and complete using a review word from the list; perimeter, distributive property, like terms, inequality, reciprocal.

3. Prerequisite Skills SKILL CHECK Simplify the expression by combining like terms. 5. 3 – 2x + 4 6. 4x + 5 + x – 1 7. –2 (3x + 1) – 2 8. 5(x – 4) – x ANSWER –2x + 7 ANSWER 5x + 4 ANSWER –6x – 4 ANSWER 4x – 20

4. Prerequisite Skills SKILL CHECK Solve the equation. Check your answer. 9. 2x – 1 = 3 10. –3x – 2 = 7 11. 4 – x = 12 12. 13 = 2x + 3 2 ANSWER –3 ANSWER –8 ANSWER 5

5. Prerequisite Skills SKILL CHECK Solve the equation. Check your answer. 13. –5x + 6 = –9 14. 8 – x = – 3 15. 17 = 4x + 1 16. 3x – 5 = 10 3 ANSWER 11 ANSWER 4 5

6. Prerequisite Skills SKILL CHECK Solve the inequality. Then graph its solution. 17. x + 5 < 18 19. 17 + x > 19 18. x – 4 – 6 > 20. – 4 + x – 9 < x < 13 ANSWER x – 2 ANSWER > x > 2 ANSWER < x – 5

7. Prerequisite Skills SKILL CHECK Solve the inequality. Then graph its solution. 21. 5x  30 > 23. x > 20 4 5 22. – 6x 54 < 24. x 12 2 3 < x 6 ANSWER > x – 9 ANSWER > x > 25 ANSWER < x 18