Algebra Final Exam Review kg2012 1. Evaluate the expression and b = 5 Page 1 of 6 2b(b a) when a 3 b v = 2. 2. Evaluate 3u + 6v when u = 3 and 17.5 m 3. Evaluate 2j + 3k when j = 2 and k = 5. 7m 4. Evaluate the expression 2x 2 6 when x 4. 6.1 m 5. Evaluate the expression 16 + 12x – x 3 when x = 3. 18. At an electronics store they sell about 760 cassette players a year and about 220 CD players a year. If the rate of cassette player sales decreases by 40 each year and the rate of CD player sales increases by 50 each year, in how many years will the CD player sales be twice as much as the cassette player sales? Use a table to determine your answer. 6. Evaluate the expression 4a 4b when a = 3 and b = 2. 2 7. Add: (5x 5 5x 6 5) + (5x 6 5 3x 5 ) Solve the equation: y 1 9 19. 2 Subtract: 8. (4 x 3 7x 2 6) (7x 3 7x 2 8x 6) 9. x 4 8x 3x 2 2x 4 12. x 5x 2 4 x 5 13. Simplify the product: (4 fg3 ) 4 ( fg) 2 Simplify: 35x 6 y 5 14. 7x 5 y 7 21. 11. ( x 1 )( x 4 ) 20. 3 4z 5 8z Multiply: 10. x 5x 9 x x 5 2 4 Solve: 3 y + 15 0 22. 12 23. 9x 11x 28 3 24. Solve for t : 5 = t 6s 25. Solve for y 5x 3y = 5 Graph: 26. x –1 9x 7 y 3 15. 3x 5 y 4 16. Simplify the expression w 8x 2 y 2 (4 xy 2 ) 1 . x 2 y x2y 17. The two rectangles are similar. Find the width of the larger rectangle. 27. x 7 28. Sketch a graph of the inequality 4 x . 29. Solve the inequality. 8x < 24 30. Solve x 11 12. Algebra Final Exam Review kg2012 Page 2 of 6 37. Name the type of model suggested by the graph. 31. Solve the inequality 4 3x x 3 . y 10 1 32. Solve the inequality 2 x 3. 3 33. Solve the inequality 3 4 x x 2. of model suggested by the graph. 34. Name the type 10 x –10 y 10 –10 38. The table gives the number of inner tubes, I, sold in a bike shop between 1985 and 1990. Year, t 1985 1986 1987 1988 1989 1990 10 x –10 Inner tubes, I 26 37 47 58 71 80 Find the type of model that best fits the data. –10 35. Name the type of model suggested by the graph. y 39. The table gives the number of inner tubes, I, sold in a bike shop between 1985 and 1990. Year, t 1985 1986 1987 1988 1989 1990 Inner tubes, I 10 8 21 33 67 132 258 Find the type of model that best fits the data. 10 x –10 40. The table gives the number of inner tubes, I, sold in a bike shop between 1985 and 1990. Year, t 1985 1986 1987 1988 1989 1990 Inner tubes, I 8 18 35 65 132 –10 Determine which model best fits the data. 36. Name the type of model suggested by the graph. y 10 10 x –10 –10 41. At an electronics store they sell about 730 cassette players a year and about 180 CD players a year. If the rate of cassette player sales decreases by 50 each year and the rate of CD player sales increases by 60 each year, in how many years will the CD player sales be twice as much as the cassette player sales? Use a table to determine your answer. 42. Suzy can run 4 m/sec and Tim can run 6 m/sec. How far ahead of Tim must Suzy be to not to fall behind Tim in the first 10 seconds of running? Use a graph to check your answer. 261 Algebra Final Exam Review kg2012 43. Nicole pays $325 in advance on her account at the athletic club. Each time she uses the club, $10 is deducted from the account. Find a linear function that models the value remaining in her account after x visits to the club. Find the value remaining in the account after 7 visits. Page 3 of 6 y 1 (–3, 0) –4 –2 –1 1 x –1 –2 44. The following situation can be modeled by the equation y 1.5x 8 . Graph the equation. –3 –4 A candle is 8 inches tall and burns at a rate of 1.5 inches per hour. Graph: 57. 6x 12 = 0 45. Find the y-intercept of the line. 2x y 10 46. Find the y-intercept of the line. 2x y 10 Graph: 47. x = 3 Graph: 58. 6x 12 = 0 59. Find an equation, in slope-intercept form, that passes through point (–1, –4) with slope –3. (0, –4) 48. y = 7 60. Find an equation for the line with undefined slope and passing through the point (3, –3). 49. What is the x -intercept of the line 5x 2y = 10 ? 61. Find an equation for the line with undefined slope and passing through the point (–8, –8). 50. State the x- and y-intercepts of y = 5x 6 . 62. Find an equation for the line with undefined slope and passing through the point (1, 3). 51. Find the x-intercept of the line 3x 4 y 12 . 52. Write the equation of the line passing through (2, –7), (2, 0), and (2, 5). 53. Find an equation, in slope-intercept form, that passes through point (4, –7) with slope –2. 54. Write an equation of a line with slope 5 passing through the point (3, –5). 55. Find an equation of the line passing through the point (1, 4) with slope m 6. 56. What is the slope of the graph. 63. Find the y-intercept of the line containing the point (–7, –6) with undefined slope. 64. Write an equation for the line containing (3, 10) and (7, 22) . 65. Write the equation of the line in slope-intercept form that passes through the points (7, –1) and (2, 9). 66. Write the equation of the line in slope-intercept form that passes through the points (–3, 5) and (2, – 5). 67. Find an equation of the line containing the points (8, 7) and (12, 16). Graph: 68. –y < 3x 7 Algebra Final Exam Review kg2012 Graph: 69. y = x 2 2 Page 4 of 6 Which system of equations below will determine the number of adult tickets, a, and the number of child tickets, c, he bought? 70. Determine the number of solutions of the equation. 3x 2 2x 6 = 0 79. The Modern Grocery has cashews that sell for $3.50 a pound and peanuts that sell for $2.00 a pound. How much of each must Albert, the grocer, mix to get 60 pounds of mixture that he can sell for $3.00 per pound? Express the problem as a system of linear equations and solve using the method of your choice. 71. Determine the number of solutions of the equation. x 2 2x 1 = 0 72. Determine the number of solutions of the equation. 4 x 2 3x 4 = 0 73. Solve the linear system by any method. 3x 2y 3 6x 2y 3 80. Use an addition equation to solve for x. 14 6 x Perimeter = 34 74. Solve the linear system by any method. 5x 2y 3 x 6y 2 75. Solve the linear system by any method. 6x 4 y = 1 2x 5y = 1 Solve the equation: 81. 5n – 2(n – 2) –11 82. 4n – 2(3 – n) –13 76. A rental car agency charges $20 per day plus 14 cents per mile to rent a certain car. Another agency charges $22 per day plus 10 cents per mile to rent the same car. How many miles will have to be driven for the cost of a car from the first agency to equal the cost of a car from the second agency? (Round your answer to the nearest hundredth of a mile.) Express the problems as a system of linear equations and solve using the method of your choice. 77. A group of 80 people attend a ball game. There were three times as many children as adults in the group. Write a system of equations that you could use to set up this problem, where a is the number of adults and c is the number of children in the group. Solve the system of equations for c, the number of children in the group. 78. Mr. Frankel bought 7 tickets to a puppet show and spent $32. He bought a combination of child tickets for $2 each and adult tickets for $8 each. 83. 5 n 2(2 n) 7 Solve the equation: y3 7 84. 4 85. The triangle below has a perimeter of 20. Solve for x. x 8 x+ 2 86. The triangle below has a perimeter of 23.2. Solve for x. x x+ 2 8 87. The circle below has a circumference of 27 inches. Approximate the radius of the circle to two Algebra Final Exam Review kg2012 decimal places. 98. Draw a box-and-whisker plot for the following data. 38, 31, 38, 34, 38, 29, 36, 28, 24, 42, 35, 40, 20, 26, 38 r 88. The circle below has a circumference of 16 inches. Approximate the radius of the circle. Round your result to two decimal places. r 99. Draw a box-and-whisker plot for the data. 37, 32, 18, 31, 40, 36, 24 100. For the data set 44, 38, 21, 37, 48, 43, and 28 draw a box-and-whisker plot. 101. Sketch a box and whisker for 27, 22, 8, 21, 30, 26, 14 89. The trapezoid below has a perimeter of 20. Solve for x. x+ 2 x 3x + 2 8 90. The circle below has a circumference of 21.54 inches. Approximate the radius of the circle to two decimal places. r 91. Find the greatest common factor of the terms 4k 4 , 40k 5 , and 28k 2 . 92. Find the greatest common factor of the terms 7 2 12 4 y , 12y , and 36y . 93. Factor out the greatest common monomial factor. 18u 4 v 5 30u 5v 4 94. Factor out the greatest common monomial 3 2 factor. 24u 40u 95. Solve the equation 4 x 2 7x 2 0. Page 5 of 6 96. Solve the equation 30x 2 11x 30 0. 97. Solve the equation 3x 7x 2 0. 102. A single six-sided fair die is tossed. Find the probability of obtaining a number greater than 3. 103. A six-sided die is rolled 210 times. Six comes up 33 times. A. What is the theoretical probability of rolling a six? B. What is the experimental probability of rolling a six? 104. After the introduction of a new soft drink, a taste test is conducted to see how it is being received. Of those who participated, 56 said they preferred the new soft drink, 100 preferred the old soft drink, and 44 could not tell any difference. What is the probability that a person in this survey preferred the new soft drink? 105. Each square is made from toothpicks. Assuming the pattern continues, plot the relation between the number of squares and the number of toothpicks. 1 2 3 106. Each trapezoid is made from toothpicks. Assuming the pattern continues, plot the relation between the number of trapezoids and the number of toothpicks. 107. Each square is made from toothpicks. Assuming the pattern continues, plot the relation between the number of squares and the number of Algebra Final Exam Review kg2012 toothpicks. Page 6 of 6 111. What type of relationship – positive, negative, or none – is shown by the scatter plot? y 1 2 10 3 108. A monthly phone bill, b, in dollars, consists of a $23 service fee plus $0.15 per minute, m, of long distance calls. The amount of the bill is a function of the minutes used, b = 23 + 0.15m. A. Draw a graph for up to and including 120 minutes of long distance calls made in a month. B. Estimate the bill if 90 minutes of long distance calls are made. 109. The table shows the study times and test scores for a number of students. Draw a scatter plot of score versus time. Study Time (min) 7 13 16 19 25 30 36 39 Test Score 57 58 65 67 67 68 74 76 110. For the following data: A. Make a scatter plot of the data. B. Draw a line of fit for your scatter plot. C. Find an equation of your line of fit. x 1 2 3 4 5 6 7 8 y 1.5 3.6 4.2 6 6.9 9.6 10.2 12 1 2 3 10 x –10 –10 Algebra Final Exam Review kg2012 Reference: [1.1.1.1a] [1] 4 Reference: [1.1.1.2] [2] 21 Reference: [1.2.1.14a] [4] 26 Reference: [1.2.1.15] [5] 25 Reference: [10.2.1.27] [11] x²-3x-4 Reference: [8.1.1.4] [13] 256f6g14 Reference: [3.3.1.33] [22] -60 Reference: [3.3.1.34] [23] x 2 Reference: [3.7.2.82b] [24] t = 5 6s 5 6 220 270 320 370 420 470 520 Reference: [3.3.1.31] 20 [21] 3 4 CD sales Reference: [10.2.1.39] [12] x³-9x²+25x-25 3 760 720 680 640 600 560 520 Reference: [13.14.418] 2 [20] 3 Reference: [10.1.1.21] [9] 3x 4 11x 2 2 cassette sales Reference: [13.14.417] [19] 17 Reference: [10.1.1.19] [8] -3x³+14x²-8x+12 Reference: [10.2.1.28] [10] x 2 4 x 45 Reference: [13.14.415] [17] 15.25 m Reference: [13.14.419] [18] 10 years year 0 1 Reference: [1.2.1.18] [6] 400 Reference: [8.3.1.34] [15] – 3x²/y Reference: [8.3.1.37] 2x [16] 6 y Reference: [1.1.1.3] [3] 19 Reference: [10.1.1.12] [7] 10x 6 2x 5 10 Page 7 of 6 5x [14] 2 y Algebra Final Exam Review kg2012 Page 8 of 6 Reference: [9.8.1.96] [35] linear Reference: [3.7.2.83b] 5x 5 [25] y = 3 Reference: [9.8.1.96] [36] exponential Reference: [9.8.1.96] [37] quadratic Reference: [6.1.1.1] [26] –10 –8 –6 –4 –2 0 2 4 6 8 Reference: [9.8.2.97] [38] linear 10 Reference: [6.1.1.2] [27] [C] –10 –5 Reference: [9.8.2.97] [39] exponential 0 5 10 Reference: [9.8.2.98] [40] exponential Reference: [6.1.1.3] [28] 0 1 2 3 4 5 6 x Reference: [3.5.2.62] [41] 8 years year 0 Reference: [6.1.2.13] [29] x < 3 2 Reference: [6.2.1.21] 1 [31] x 4 Reference: [9.8.1.95] [34] absolute value 5 6 CD sales 180 240 300 360 420 480 540 Reference: [3.5.2.63] Dis tance Reference: [6.2.1.22] [32] x < –3 Reference: [6.2.1.23] 5 [33] x 3 4 730 680 630 580 530 480 430 50 3 cassette sales Reference: [6.1.2.15] [30] x 1 1 [42] 20 meters Seconds Reference: [4.8.2.99] [43] V(x) = 325 – 10x; $255 10 Algebra Final Exam Review kg2012 Reference: [4.6.2.85] 6 [50] x-intercept: ; y-intercept: –6 5 y 10 Reference: [4.3.1.38] [51] 4 Height (in.) 0 Number of hours [44] Reference: [4.2.2.24] [52] x = 2 10 x Reference: [5.2.1.13] [53] y=-2x+1 Reference: [13.14.427a] [45] y-intercept: 10 Reference: [5.2.1.15] [54] y = 5x 20 Reference: [13.14.427a] [46] y-intercept: 10 Reference: [5.3.1.30a] 4 [56] y x 4 3 Reference: [4.2.2.23] y Reference: [5.2.1.16] [55] y=-6x+10 x Reference: [4.2.2.33] y [47] 10 y 10 10 x –10 [57] [48] 10 x –10 –10 –10 Reference: [4.3.1.36] [49] 2 Reference: [4.3.1.37] Reference: [4.2.2.34] Page 9 of 6 Algebra Final Exam Review kg2012 Page 10 of 6 y y 10 10 x –10 [58] [68] 10 [69] Reference: [13.14.466] [72] 2 Reference: [5.2.1.18] [63] none Reference: [7.4.1.29] 1 2 , [73] 3 2 Reference: [7.4.1.30] 1 1 , [74] 2 4 Reference: [7.4.1.31] 1 4 [75] , 38 19 Reference: [7.4.2.32] [76] c = 20 + 0.14m c = 22 + 0.10m 50 miles Reference: [5.3.1.31] [65] y 2x 13 Reference: [5.3.1.32] [66] y 2x 1 Reference: [5.3.1.33] [67] 9x-4y=-44 Reference: [13.14.443] –10 Reference: [13.14.466] [71] 1 Reference: [5.2.1.17] [62] x = 1 10 x Reference: [13.14.466] [70] 2 Reference: [5.2.1.17] [61] x = 8 Reference: [5.3.1.29] [64] y = 3x 1 y –10 Reference: [5.2.1.17] [60] x = 3 Reference: [13.14.464] –10 Reference: [5.2.1.13] [59] y=-3x-7 x Algebra Final Exam Review kg2012 Page 11 of 6 Reference: [7.4.2.33] [77] Sample Acceptable Response: a c = 80 c = 3a by substitution: a 3a = 80 4a 80 = 4 4 a = 20 c = 3(20) = 60 children Reference: [3.7.1.76] [86] 6.6 Reference: [3.7.1.77] [87] 4.30 in. Reference: [3.7.1.78] [88] 2.55 in. Reference: [7.4.2.34] [78] 8a+2c=32 a+c=7 Reference: [3.7.1.79] [89] 1.6 Reference: [7.5.2.49] x y 60 [79] 3.50x + 2.00y 180 x = 40 pounds of cashews y = 20 pounds of peanuts Reference: [3.7.1.80] [90] 3.43 in. Reference: [10.8.1.90] [91] 4k 2 Reference: [3.1.1.3] [80] 14 Reference: [10.8.1.91] [92] 4 y 2 Reference: [10.8.1.96] [93] 6u4v 4 (3v 5u) Reference: [10.8.1.97] [94] 8u2 (3u 5) Reference: [3.3.1.25] [81] –5 Reference: [3.3.1.26] 7 [82] – 6 Reference: [3.3.1.27] 3 [83] 7 Reference: [3.3.1.29] [84] 25 Reference: [10.6.2.83] 1 [95] –2, 4 Reference: [10.6.2.82] 6 5 [96] , 5 6 Reference: [3.7.1.73] [85] 5 Algebra Final Exam Review kg2012 Reference: [10.6.2.81] 3 [97] 0, 7 Page 12 of 6 Number of Toothpicks Reference: [6.7.1.110] [98] 0 19 23 27 31 35 39 43 47 Number of Squares [105] Reference: [4.6.2.86] Reference: [6.7.1.111] [99] [A] Reference: [6.7.2.112] [100] yes Number of Toothpicks Reference: [6.7.2.113] [101] [A] Reference: [2.8.1.90] 1 [102] 2 0 Number of Trapezoids [106] Reference: [4.6.2.86] Reference: [2.8.1.91] 1 11 [103] A. B. 6 70 Number of Toothpicks Reference: [2.8.1.94] [104] 7/25 [B] Reference: [4.6.2.86] 0 [107] Number of Squares Algebra Final Exam Review kg2012 Reference: [3.6.2.72] Page 13 of 6 50 40 Cos t 30 ($) 20 10 0 50 100 Minutes [108] A. B. $36.50 Reference: [4.1.2.12] [109] 85 80 Test 75 Score 70 65 60 55 50 Effect of Study on Test Score 10 20 30 40 Time (min) 50 Reference: [13.14.433] y [110] y = 1.5x Reference: [13.13.390] [111] none x 60
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