1. Algebra 2 Practice Item Guide April 2012 18 questions

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3. TECHNOLOGY-ENHANCED ITEM TYPES

10. 81

11. 1.

13. 2.

15. 3.

16. HINT: Graph & compare. (Remember parenthesis!) 3.

17. 4.

18. HINT: Graph! (Remember parenthesis!) 4.

19. 5.

20. HINT: Graph! (Remember parenthesis!) 5.

21. 6.

22. HINT: Stat-Edit (Enter data). Stat-Plot (determine shape). Stat-Calc  pick matching regression type.

23. 7.

24. HINT: Multi-step! N = 968 x-bar = 108 sigma = 11 x = 125 P(z>1.55) = 1 -.9394 (table lookup) =.0606 Final answer is probability times #data points = 968 *.0606 = 58.66

25. 8.

26. HINT: Distributive – you distributed Commutative – you Changed Order Associative – you associated the middle # with the last #

27. 9.

28. 47 9. HINT: Use logic! a 1 = 8 a 2 = 2(8) + 5 = 21 a 3 = 2(21) + 5 = 47

29. 10.

30. HINT: Find graph with same y-value (range!). Graph & compare!

31. 11.

32. HINT: Think of the question as: Describe the x-values (intervals) where the graph is going up. Then just graph and look!

33. 12.

34. HINT: Graph and look! Think “HOY VUX”. Horizontal (HOY): y = 4 Vertical (VUX): x = 3

35. 13.

36. HINT: Committees = Combinations! 3 C 1 * 7 C 2 = 63

37. 14.

38. HINT: Same logic as #11. Think of the question as: Describe the x-values (intervals) where the graph is going up. Then just graph and look!

39. 15.

40. HINT: Must find the % of data first. 23750/50000 =.475 = 47.5% Empirical rule: Pick the 2 sections to the right (or left) of the mean.

41. 16.

42. HINT: Zeros = x-intercepts! Graph. 2 nd Calc  zero x = 2.5

43. 17.

44. HINT: Graph!

45. 18.

46. HINT: Substitute. 5x -4(x 2 -x-6) – 11 = 0 Distribute, factor, set factors to zero. OR graph y = 5x -4(x 2 -x-6) – 11 and find x-intercepts once you are already equal to zero!