14. 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 15. 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 16. 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 17. The residential average price of electricity in New Jersey was 14.52 cents per kilowatt-hour in 2009. Express the relation between the number of kilowatt-hours (in hundreds) and the cost (in dollars) associated with them as an equation. (Source: www.think-energy.net) 18. The residential average price of electricity in Alaska was 15.09 cents per kilowatt-hour in 2009. Express the relation between the number of kilowatt-hours (in hundreds) and the cost (in dollars) associated with them as an equation. (Source: www.think-energy.net) Determine if each relation is a function. If not, explain why. (See Objective 2.) 19. {(2, -5), (2, -1), (2, 8), (2, 14), (2, 18)} 20. {(-14, -3), (-7, -3), (-5, -3), (6, -3), (12, -3)} 21. {(-20, 6), (-9, 6), (0, 6), (1, 6), (4, 6)} 22. {(4, -8), (4, -1), (4, 0), (4, 7), (4, 11)} 23. {(-2, 2), (-2, 4), (1, 8), (5, 12), (0, 9)} 24. {(-5, 8), (-5, -7), (1, 15), (-1, 0), (2, 10)} 25. Assign to each student the grade earned in their physics class. Bernadette Bertha Caroline Holly Hong Joan Roy Sherman A B C D F 26. Assign to each student the grade earned in their math class. Adrian Bevan Dena Jean Jeannette Marie Molly Rosa Roy Wong A B C D F 27. y = 2x + 5 28. y = -4x + 3 29. y = ux - 1u 30. y = 2 - uxu 31. x = uy - 2u 32. x = uy + 3u 276 Chapter 3 Linear Equations in Two Variables
hendricks_beginning_algebra_1e_ch1_3
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