1. ALGEBRA 1 LESSON 1-6 Multiplying and Dividing Real Numbers 1-6 1.–15 2.–15 3.15 4.15 5.–34.4 6.–2 7.–120 8.–105 9.–80 10.80 11.–78 12.81 13.–12 14.12 15.–15 16.5 17.–8 18.–13 19.48 20.1 21.12 22.–8 23.–432 24.1 25.–64 26.–87 27.4 28.24 29.36 30.12 31.a. –24°F b.–75°F c.–51°F d.–31.5°F 32.–1 33.8 34.–25 35.81 36.–81 37.–192 38.–5 39.675 40.–2 41.–4 42.5 43.6 44.–11 pages 41–44 Exercises 45.12 46.–2 47.–8 48.–1 49.–7 50.–28 51.0 52.4 53.3 54.1 55.–15 1212 4545 1212 2323 1212 1313 1212

2. ALGEBRA 1 LESSON 1-6 Multiplying and Dividing Real Numbers 1-6 56. 57.– 58.–2 59.18 60.– 61.– 62.–125 63.0.75 64.–27 65.22.32 66.44 67.–27 1 18 6 25 1212 8 15 68.–60 69.30 70.a. i. 2 ii. –6 iii. 24 iv. –120 b.pos. c.neg. d.No; answers may vary. Sample: The sign of the product is not affected by the number of pos. factors, only by the number of neg. factors. 71.a. When a and b are both neg. or both pos. b.When a is neg. and b is pos., or when a is pos. and b is neg. 72.–1 73.– 74.1 75.– 76.–6 77.–4 78.– 79. 5 12 1515 1212 1515 5656 7878 1 10

3. ALGEBRA 1 LESSON 1-6 80–84. Answers may vary. Samples are given. 80.ac + b 81.b – a + c 82.ab – c 83.–ab + c 84.–bc + a 85.31¢ 86.Yes; whatever the signs of a and b, | ab |, | a |, and | b | are pos., and | ab | = | a | | b |. 87.a.4, –8, 16, –32 9, –27, 81, –243 b.Pos.; the expression will involve an even number of neg. factors. c.Neg.; the expression will involve an odd number of neg. factors. 88.0.1 is the multiplicative inverse of 10 because 0.1(10) = 1. (–10 is the opposite of 10.) 89.The opposite of a nonzero number n is –n while the multiplicative inverse is. 1n1n 1-6 90. 91. 92. 93.[–12 –2 ] 94. 95. –15 21 –9 –22 10 18–12 8 –6 2323 4.7–1.30.79 –0.026.40 –8–10.64 6.2012 1 – 0 1414 3 16 2929 2323 Multiplying and Dividing Real Numbers

4. ALGEBRA 1 LESSON 1-6 Multiplying and Dividing Real Numbers 1-6 96.a. 139 ft; 91 ft b.Less than 4 s; for t = 4, h = 155 – 16t 2 = –101, so h = 0 for some value less than 4 (about 3.1). 97.a. a = 5000 – 25t b.312.5 ft c.4687.5 ft 98.–23°C 99.– 100. 101. – 102. 103.– 104.–8 105., or 11 106.– 107.– 108. 109.A 110.F 111.C 112.H 113.B 1818 1 16 1 32 1 64 1 64 45 4 9 16 5 48 1212 114.–2 115.–20 116.0.8 117.9.8 118.2 119. 120.4.95 121.56 122.4.59 123. 124.23 125.121 126.196 127.$34.93 1414 1414 1 72 3434