Precalculus

Answers Chapter 1 Review A-561. Between 13.4 and 13.6 inches63. From 98.6 to 102.2 degrees Fahrenheit65. Between 2 and 3 seconds67. From 49.3 seconds to 200.7 seconds after blast-off69. False 71. TrueSection 1.7, page 1081. 49223. 11 5. 7. 9.5 51 13 1.6911. 1,000,000 13. 3 15. 4 17. 3 19. 5 321. Slope of l 1 2Slope of l 2 2 3Slope of l 3 3Slope of l 4 023. Slope of l 1 3 7Slope of l 2 7 3Slope of l 3 3 725. y x 2 27. y x 10 29. x 331. y 5x 11 33. y 1 35. y 1 3 x 116337. y 2x 4 39. x 3 41. y 0.7353x 2.517643. y 320 x 174045. x 47. m 2 3 , b 8 349.54321–5–4–3 –2 –1 1 2 3 4 5–2–3–4–5m 1 3 , b 4 354321–5–4–3 –2 –1 1 2 3 4 5–2–3–4–5yy2x – 3y = 8x = 3y + 4xx51.321x–5–4–3 –2 –1 1 2 3 4 5–2–3 y – 3 = – 2(x + 3)–4–553. y 2 55. y 4x 5 57. y 3x 23 x 259. x 3 61. 3x y 4 63. 2x y 1 or 6x 3y 1365. ( 13 67. (2, 5) 73. C 5N 10005 , 14 5)75. a. h 264 b. Approximately 3 inches67 tc. Approximately 50 inches77. $146,00079. a. 271.4 million b. 313 million81. False 83. True 85. FalseChapter 1 Review, page 1131. Rational, real, complex 3. Complex5. [5, 1)7.m 2, b 3y(, 1 2t 1/2(t 4)(t 8)9. 81 11.b 4 13. 3.14 10 7 15. a 2 bb3 17. 3319.x 2x 2 221. 2s 3 t3 23. 117 25.3b27. x 2 29. x 1/12 31. 33. t 3 t 2 5ta35. 3w 2 10w 8 37. (3u 2)(3u 2) 39.41.1 t 2(y 1)43. 45. t 1(3x 1) 2 47.x 3 t(t 1) y(y 2)49.x151.(x 1)(x 3) 2t53.y54321–5–4–3 –2 –1 1 2 3 4 5(–2, –3)54–7 –6a 2–2–3–4–5–2d 10Midpoint (1, 1)]–5 –4 –3 –2 –1 0–1(4, 5)(1, 1)]0 1 2 3x1