1. Prerequisite Skills VOCABULARY CHECK 40 ANSWER What is the least common denominator of and ? 1. 3 8 7 10 2. Which equation is a direct variation equation, x or x ? y 5 = 5 y = ANSWER y 5 = x

2. Prerequisite Skills SKILL CHECK 3. What is the degree of the polynomial 4x – 2 + 5x 2 ? ANSWER 2 –1 4. Identify the extraneous solution when solving x + 2 = x.

3. 5. x 2 –2x –15 Prerequisite Skills SKILLS CHECK Factor the polynomial. 6. 2x 2 –8x+6 (x – 5)(x + 3) ANSWER 2(x – 3)(x – 1) ANSWER 7. 9x 2 – 25 (3x + 5)(3x – 5) ANSWER 8. 3x 3 – 48x 3x(x + 4)(x – 4) ANSWER

4. Prerequisite Skills SKILLS CHECK Add, subtract, multiply or divide. 9. + 1 3 3 4 ANSWER 1 1 12 10. – 7 8 2 5 ANSWER 19 40 11. 5 9 × 3 5 1 3 ANSWER 12. 3 10 ÷ 6 25 1 1 4 ANSWER

5. Prerequisite Skills SKILLS CHECK Solve the equation or proportion. 13. 4x = 9 ANSWER 9 4 14.= 3 5 x 10 ANSWER 6 15.x 2 + x = 6 ANSWER – 3, 2 ANSWER 13 16. x – 9 = 2