Questions and Answers 1. Evaluate the given expression if x = 4, y = 8, w = -2 and z = 3. o (x-y)² + 5wz A. -14 o B. 14 o C. 44 o D. 34 2. Simplify 5x + 2y – 7x + y Discuss 3. Simplify 6(4x + 8y) + 2(3x – 6y) 4. Simplify (4x² + 3x + 3) + (5x² – 13x – 8). Use ^ for powers ie. x^2 is x to the second power. 5. Simplify (-10x² – 4x + 8)- (6x² + 10x -3) 6. Simplify -3xy(6xy³- 4xy + 7y²) o A. -18x^2y^4 + 12x^2y^2 - 21xy^3 o B. -18x^2y^4 - 12x^2y^2 - 21xy^3 o C. 3x^2y^4 - 7x^2y^2 + 4xy^3 o D. 3x^2y^4 + 7x^2y^2 - 4xy^3 7. Simplify 10squrt(162) - squrt(405) - squrt(200) 8. o A. A o B. B o C. C o D. D 9. o A. A o B. B o C. C o D. D 10. Solve 24p - 12 = 50; p = _____, round to the nearest hundredth. 11. Solve 5x - 23 = 56; x = ____, round to the nearest tenth. 12. Solve- abs(x - 2) = 27, X = ____ o A. 29 o B. 25 o C. -25 o D. 29, -25 13. Find the value of f(6) if f(x) = -4x - 2. o A. 26 o B. -26 o C. 24 o D. -24 14. Find the slope of the line that passes through the pair of points (-3,-5) and (7,5).In your answer type the number only. 15. Write an equation in slope-intercept form for the line that satisfies the following condition. Slope 3, and passes through (5,20).Use spaces between operation symbols when typing your answer. Ex. y = 3x - 2 16. Solve the system of equations. o x – y = 4 and y = 2x – 6 A. X=2y=2 o B. X = -2 y = 2 o C. X = -2 y = -2 o D. X = 2 y = -2 17. Solve the system of equations. o A. X = 4.8 y = 3.0 2x + 5y = 12 and x – 3y = -2 o B. X = 2.4 y = 1.5 o C. X = 1.2 y = 0.75 o D. X = 7.2 y = 4.5 18. Describe the system of equation as consistent and independent, consistent and dependent, or none of these. 3x – 2y = 1 and 6x – 9y = 63 o A. Consistent and independent o B. Consistent and dependent o C. None of these 19. Express the given number or expression in scientific notation. Round to the nearest hundredth. 0.0000269074 20. Factor 4xy – 3y – 40x + 30 o A. (4x - 3)(2y - 20) o B. (12x - 9)(2y - 20) o C. (y - 10)(4x - 3) o D. Y(4x - 3) - 10(4x - 3) 21. Factor 2x² + 3x – 9 22. (5 + ί) + (6 - 12ί) o A. 11 + 11i o B. 11 - 11i o C. 30 - 72i o D. 11 + 13i 23. (4 - 10ί) + (15 - 16ί) 24. Solve: squrt(2x - 2) + 12 = 14x = ____ Type the number only for your answer. 25. Solve: squrt(x - 3) + 6 = 15 o A. 64 o B. 84 o C. 74 o D. 34 26. M + 5 < 4 or m + 2 > 9 o A. M > -1 or m< 7 o B. M . -1 or m > 7 o C. M < -1 or m > 7 o D. M > - 1 or m > 7 27. Simplify sqrt(36x^12y^8) o A. 6x^6y^4 o B. 6x^12y^8 o C. 9x^12y^8 o D. 9x^6y^4 28. Express the product in Scientific notation. Round to the nearest hundredth and use spaces between x, and no spaces before or after parenthesis or ^. (6.34 x 10^-3)(6.3 x 10^-5) 29. Simplify squrt(-200x^8y^12) o A. -10x^4y^6squrt(2) o B. -10ix^4y^6squrt(2) o C. 10x^4y^6squrt(-2) o D. 10ix^4y^6squrt(2) 30. Evaluate squrt(-300) x squrt(-400) o A. Squrt(1200) o B. 20squrt(3) o C. 200isqurt(3) o D. -200squrt(3) 31. Simplify sqrt(200x^17y^24) o A. 10x^8y^12squrt(2x) o B. 10x^8y^12squrt(2) o C. 10y^12squrt(2x^17) o D. 10squrt(2x^17y^24) 32. o A. A o B. B o C. C o D. D 33. o A. A o B. B o C. C o D. D 34. What is squrt(1344) divided by squrt(7) o A. 192 o B. 32squrt(6) o C. 8squrt(3) o D. Squrt(192) 35. o A. A o B. B o C. C o D. D 36. o A. A o B. B o C. C o D. D