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4. Systems of Equations Probability Linear Equations Exponents Solving Equations 10 Points 20 Points 30 Points 40 Points 50 Points 10 Points 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Pythagorean Theorem & Radicals

5. -6x -2y = -14 y = -2

6. (3, -2)

7. y = 2x -4x – 2y = -24

8. (3, 6)

9. 3y - 2x = 11 y + 2x = 9

10. (2, 5)

11. 3x + y = 13 x + 6y = -7

12. (5, -2)

13. x + 2y = 8 x - 2y = 4

14. (6, 1)

15. How many possible outcomes are possible if you flip 2 coins?

16. 4

17. A bag contains 3 red, 4 blue, 2 white and 1 purple marble. 2 marbles are drawn (with replacement). Find P(red, blue)

18. 3/25

19. 2 dice are rolled. What is the probability of rolling a sum of 5?

20. 1/9

21. In a standard deck of 52 cards, what is the probability of selecting a 7 and red card?

22. 1/26

23. In a standard deck of 52 cards, what is the probability of selecting a black card or queen?

24. 7/13

25. Can sides of lengths 5, 12, and 13 be the sides of a right triangle?

26. Yes

27. The legs of a right triangle are 6 and 8. What is the length of the hypoteneuse?

28. 10

29. √300

30. 10√3

31. √20·√10

32. 10√2

33. √8 + √32

34. 6√2

35. What is the slope of the line y = -3x + 6

36. -3

37. What is the y- intercept of the line 2x + 5y = -10

38. -2

39. Put the following equation in slope- intercept form 3x – 4y = 12

40. y = ¾ x - 3

41. Write the equation of a line with slope 5 through the point (3, 2).

42. y = 5x - 13

43. A line that is perpendicular to y = 3/4 x + 7 has what slope?

44. - 4/3

45. Write the number.0000000456 in scientific notation

46. 4.56 X 10 -8

47. Write the number 5,381,000,000 in scientific notation

48. 5.381 X 10 9

49. Simplify x -4 y 6 /x -8 y 4

50. x4y2x4y2

51. (4v 2 ) 2 · 2v 2

52. 32v 6

53. (-3x 3 ) 3 (-3x) 2

54. -243x 11

55. 2x + 12 = 4x - 8

56. X = 10

57. 28 = -7(6a + 2)

59. 19 = 7 + 3(k + 6)

60. -2

61. x + 6(1 + 5x) = 68

62. 2

63. 4(n – 3) = 2(2 – 2n) + 4n

64. 4

65. Make your wager

66. 2 3 (x – yx ÷ 6) x = 4 y = 3

67. 16