By Johnson, Barbara Loreen; Ellenbogen, David; Bittinger, Marvin L
The Bittinger Graphs and versions sequence helps readers examine algebra through making connections among mathematical options and their real-world purposes. plentiful purposes, a lot of which use genuine facts, provide scholars a context for studying the mathematics. The authors use numerous instruments and techniques—including graphing calculators, a number of techniques to challenge fixing, and interactive features—to interact and encourage every kind of beginners
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Extra resources for Intermediate algebra : graphs and models
Example text
Use the distributive law as needed. 46. 9x + 3x 45. 3x + 7x 47. 9t2 + t2 48. 7a2 + a2 49. 12a - a 50. 15x - x 51. n - 8n 52. x - 6x 53. 5x - 3x + 8x 54. 3x - 11x + 2x 31 81. 2y + 573312y - 52 - 18y + 724 + 96 82. 8n - 563213n - 42 - 17n + 124 + 126 Use a graphing calculator to evaluate each expression for the given values of the variables. 83. 1. 84. 7 and for a = 23. 85. 8. 86. 6. 3, for x = - 3, and for x = 0. Then determine whether the expressions appear to be equivalent. 87. 2x - 31x + 52, - x + 15 88.
The section(s) in which these types of exercises first appeared is shown in brackets. Answers to all Skill Review exercises appear at the back of the book. 1). Evaluate. 1] 147. 21x + 52 and 2x + 10, for x = 3 148. 2a - 3 and a - 3 + a, for a = 7 24 CH A P T E R 1 Basics of Algebra and Graphing SYNTHESIS 154. 2 - 7 # 2 2 + 9 = - 11 TW 149. Explain in your own words why 7>0 is undefined. TW 150. Explain in your own words why 0 has an opposite but not a reciprocal. 155. 2 and a 6 0. Insert one pair of parentheses to convert each false statement into a true statement.
2a + 7b - 13 43. x2 - 6x - 7 44. - 3y2 + 6y + 10 Simplify to form an equivalent expression by combining like terms. Use the distributive law as needed. 46. 9x + 3x 45. 3x + 7x 47. 9t2 + t2 48. 7a2 + a2 49. 12a - a 50. 15x - x 51. n - 8n 52. x - 6x 53. 5x - 3x + 8x 54. 3x - 11x + 2x 31 81. 2y + 573312y - 52 - 18y + 724 + 96 82. 8n - 563213n - 42 - 17n + 124 + 126 Use a graphing calculator to evaluate each expression for the given values of the variables. 83. 1. 84. 7 and for a = 23. 85. 8. 86. 6.