Selected Answers - ClassZone

1 Page 1 of 2 Selected AnswersCHAPTER 1 SKILLREVIEW(p. 2) 2. 70 6. 77. 10 8. 8 units2, or about PRACTICE(pp. 7 10) property of addition propertyof multiplication property of multiplication 15.; 12 > 5 > 53 < 3 94 > 3 23. 5 > 2 25. 8 > 27. 6, 3, 12 ,2, 143 29.; 52 , 5 , 13 , 0, 3 31. 1 2 , 152 , , 0, property of property of multiplication of multiplication ; the associativeproperty of addition is true for all real numbers a,b, and ; the associative property of multiplication is truefor all real numbers a,b, and c. + ( 7) = 25 45.

2 5 8 = 13 ( 4) = 36 49. 5 12 = 10 ft 53.$ , HI; New Orleans, LA; Jackson, MS; Seattle-Tacoma, WA; Norfolk, VA; Atlanta, GA; Detroit, MI; Milwaukee, WI; Albany, NY;Helena, MT; three ; the result of performing thegiven operations is 9, the check digit. CentralPlaza: 352 yd, 12,672 in., mi; Petronas Tower I: yd, 17,796 in., about mi 63.$21465. 15 MIXEDREVIEW(p. 10) 71. 30 75. 34 3 79. 14 PRACTICE(pp. 14 16) + 21. 32 33. 5 37. 8 41. 59 43. 153 88 51. 5x y53. 21 n(n+ 10); 1000 55.(x+ y)2; 289 1,200,000; about 238,000 + (12)n,where nis the number of movies rented each month;$ 61.

3 [4n+ 8(3 n)]15, or 360 60n, where nisthe number of hours spent walking; $ MIXEDREVIEW(p. 17) 3 > < 72 property of addition property of multiplication 83. 87 85. 54 87. 9 89. 114 QUIZ1(p. 17)1. 2. , 34 ,0,1, 29 , , , 185 , 130 property property of addition 6. 137 7. 14 9. 124 11y+ 4 10 12. 2x2+ 5x 6 13. 2x2+ + (15 n), or , where nisthe number of regular floppy disks (p. 18)1. ( 4)2 5; 11 3.(1 + 4)6; 15,625 9. PRACTICE(pp. 22 24) 11. 45 13. 3 5 from each side. each side by 74 . 2 from each side; then multiply each side by 3.

4 25. 27 27. 54 29. 1 35. 1825 : 36, width: 14 43. C h 47.$635,000 MIXEDREVIEW(p. 24) , or about , or about 154 67. 28 5x 6 + 35 x+ + (p. 25) ; y1= y2whenx= 2, not when x= 2. 3. 2 PRACTICE(pp. 29 32) 53 x 3 230 x+ 4 43 x 24 in. 13. 1 15. 196 17. 335 21. 4 23. 121 rIt 2hA S 2 2 rr2 ; 352 6 , or about in. mT + 21 3V r232104 1 2 3 4103158 1 2 392 34 1 1 2 3 43 1032 1 2 3 135 52 102 1 2 3 4 941032 1 2 33 5310 1 2 3 4 512321054 1 2 334 5 1 2 3 432 52 Selected AnswersSA1 Selected ANSWERSPage 1 of 2 Selected R2T+R2A2 p1V+ answer:210 sun visors, 550 baseball caps; 490 sun visors,430 baseball caps; 700 sun visors, 340 baseball caps 41.

5 MIXEDREVIEW(p. 32) + h 38 L 57.$165 59. 6 63. 7 PRACTICE(pp. 37 39) diagram helps you seehow to express the numbers of gallons used in town interms of x, the label given to the number of gallons used onthe highway. pressure = 2184 (lb/ft2); pressureper ft of depth = (lb/ft2per ft); depth = d(ft) ft = 17 h 13. 80t= (180)(3) = (calories/gram of fat)(number of grams of fat) +(calories/gram of protein)(number of grams of protein) +(calories/gram of carbohydrate)(number of grams ofcarbohydrate) g Britain: km,France: km; Dec. 1, 1990 21.$ per page : 135 ft, width: 105 ft m MIXEDREVIEW(p.)

6 39) 35. 55, 10, 5, 1, 4 37. , , , 2, 41. 74 QUIZ2(p. 40) 2. 8 3. 137 53 x+ 95 ; 53 43 x 134 ; 2 d2A2 PRACTICE(pp. 45 47) 5; 12; > 2; > 5 11; < 6; > 3; < 6 < 0 x 18 39. 6 n 1; 41. 1 < x< 1; 3 orx 6; < 5 or x> ; x< sales must be greater than or equal to $5000. score must be between 93 and 100, inclusive. K 242 > MIXEDREVIEW(p. 47) property ofmultiplication property of addition 65. 170 67. 1 15 h, or 1 h 12 (p. 48) 4 > 3 6 < 2 < 6 9 < PRACTICE(pp. 53 55) 2x 13 or 11 2x 13 13.

7 9 x+ 5 9 15. 18 < 14 x+ 10 < 18 8 = 11 or x 8 = 11 + 1 = 12 or 6n+ 1 = 12 + 1 = 5 or 2x+ 1 = 2x= 8 or 15 2x= 8 25. 23 x 9 = 18 or 23 x 9 = 18 , 3 , 1 37. 276 , 374 , 18 41. 15 3 + 4x 15 43. 7 < 3x+ 2 < 7 45. 18 8 3n 18 47. 9 < x< 7; 6 or x x 13; < 34 or x> 332 ; 125 or x 12 ; 57. 4 < x< 178 59. 4 < x< 2 < 3 or x> 7 < 1 or x> 4 65. p ; 67. x p 136 ; between 8 1156 in. and 9 156 in., inclusive. 69. t 1 oz; oz; c 384 : v 270 > 10, basketball: b 625 > 25,water polo: w 425 > 25, lacrosse: l > ,football: f > L: c 2000 > 9,1 L: c 1000 > 5, 500 mL: c 500 > MIXEDREVIEW(p.)

8 56) ; if x= 7, then 2x= 2( 7) = 14, not 14. 95. 27 97. 14 > 13 5 105. 14 < x< 2 QUIZ3(p. 56) 5; < 7; 3. 4 < x< 6; 2 or x> 3; 5. 1, 9 , 1 7. 3, 15 , 32 9. 136 , 8 , 9 5 or y 1; 12. 10 < x< 2;0 2 6 4 8 12 100421 2 8 6 4 5 1 20231 30642 2 6 4 2 40 10 12 8 6 8 10 2 6 4 15212120963 3 6 433233120961815133967 30 9 60 4 6 5 1 3 2 206421083 2 3 10321 6 5 4 3 2 10 2 140321 2 408642 4 20 10 12 8 6 11 2 140321 2 3 1032196318150123216504 3 3 3 4SA2 Selected AnswersPage 1 of < 4 or x> 10; y 4; < 1 or x> 2; 92 or x 2; e 28; between 320 mi and 448 mi, inclusive 18. d 30 ; between mm and mm,inclusiveCHAPTER1 REVIEW(pp.

9 58 60)1.; , 6 , 2, , 56 property 5. 18 + x13. 3 15. 32 5x 10 + 7 56 x+ 2 P 22w 5 h 55 min > 8; 3; 33. 2 y 2; 35. 5, 3 37. 83 , 6 39. 2 < x< 7 CHAPTER 2 SKILLREVIEW(p. 66) 2. 2 3x+ 4 21 x 5 65 x 10 < 92 26 < 52 PRACTICE(pp. 71 74)5. : 0 t 8; range: 0 g 16; : 1, 2, 5, 6; range: 2, 3 : 1, 2, 3, 4; range: 1, 2, 3, 4 23.; 25.; 27.; a relation is a function, then no vertical line intersectsthe graph of the relation at more than one point. If novertical line intersects the graph of a relation at more thanone point, then the relation is a function.

10 ; 7 linear; 1 linear; 25 ; the volume of a cube with sides of length 5 Sample answer:Not every age corresponds toexactly one place. For example, there were 24-year-oldswith finishes of first and third. : 1, 5, 6, 10, 12, 25; : 0 d 130; range: 1, 2, 3, 4, 6, 9;range: 1 p 4 3313 ; : 20 78 c 25; range: 6 58 s 8; MIXEDREVIEW(p. 74) 67. 21 69. 41 71. 73. 4 1161 75. 1112 PRACTICE(pp. 79 81) ; vertical 7. 1; ; rises 2 ; rises 23. 12 ; rises 25. 1; falls ; vertical 29. 12 ; falls ; vertical 1 2 SizeCircumference (in.) (25, 8)), 6(207858 Pressure Versus DepthDepth (ft)2045671312040800 Pressure ( )pd(0, 1)(130, )Jazz ShootingShots attempted204567891393151824216120 Shots madeyxyx1 11 1yx11 3 2 10 Input Output 33 22 110 10123 Input Output 3 2 1012yx2 22 2 Gasoline RemainingTime (h)408101214162662101214480 Gasoline (gal)gtyx1 1 1yx11 1 1 3 20321 1 3 2 5 401 28010642102 1 2 3 2 8 6 4042 92 2 104321 1043215 6 301296310 4 Selected AnswersSA3 Selected ANSWERSPage 1 of 2 Selected ; dollars/h ; ft/year.