Section 3.6 Functions 279 70. The following table shows the number of days that selected U.S. metropolitan areas failed to meet acceptable air-quality standards in 2008. (Source: http:// worldalmanac.com) Metropolitan Statistical Areas Number of Days Atlanta 4 Bakersfi eld 26 Baltimore 4 Detroit 1 Houston 2 Los Angeles 28 Memphis 1 New Orleans 0 New York 1 Orange County 1 Phoenix 84 Sacramento 20 Washington, DC 3 71. The mapping below shows the number of major professional championships earned by each professional golfer. (Source: http://worldalmanac.com) Walter Hagen 6 Ben Hogan Nick Faldo Jack Nicklaus Arnold Palmer Gary Player Gene Sarazen Sam Snead Lee Trevino Harry Vardon Tom Watson Tiger Woods 7 8 9 11 14 18 72. The results of the Indy Racing League (IRL) winners from 1996 to 2008 are shown in the mapping. (Source: http://worldalmanac.com) 1996 Kenny Brack 1997 1998 1999 2001 2000 2002 2003 2004 2005 2006 2007 2008 Buzz Calkins Scott Dixon Dario Franchitti Sam Hornish Jr. Tony Kanaan Buddy Lazier Greg Ray Scott Sharp Tony Stewart Dan Wheldon 73. {(3, 9), (3, -14), (3, 4), (3, -2), (3, -8)} 74. {(9, 3), (-14, 3), (4, 3), (-2, 3), (-8, 3)} 75. {(1, 3), (-2, 7), (-2, 1), (0, 5), (4, 0)} 76. {(6, -3), (1, -3), (0, 11), (-5, 0), (2, 0)} 77. Assign to each student the grade earned in their chemistry class. Alex Brad Derek Diane Marc Pam Shan Walt A B C D F 78. Assign to each student the grade earned in their computer programming class. Alex Brad Derek Diane Marc Pam Shan Walt A B C D F 79. y = 7 80. x = 4 81. y = 1 2 x + 4 82. y=- 5 2 x + 1 83. 84. 4 2 2 4 –2 –4 –2 –4 x y 2 85. 86. 2 4 4 –2 –4 –2 –4 x y 2 2 4 4 6 –2 –2 –4 x y 2 2 4 –2 –4 –2 –4 –6 x y
hendricks_beginning_algebra_1e_ch1_3
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