Page 627 - Basic College Mathematics with Early Integers

604 C HAPTE R 8 I INTRODUCTION TO ALGEBRA

57. During the 2008 Super Bowl, the Pittsburgh Steelers 58. During the 2009 Men’s NCAA Division I basketball
scored 4 more points than the Arizona Cardinals. championship game, the Michigan State Spartans
Together, both teams scored a total of 50 points. How scored 17 fewer points than the North Carolina Tar
many points did the 2008 champion Pittsburgh Steelers Heels.Together, both teams scored a total of 161
score during this game? (Source: NFL) points. How many points did the 2009 champion North
Carolina Tar Heels score during this game? (Source:
National Collegiate Athletic Association)
For Exercises 59 and 60, see the graph to the right of these National Supply and Demand
exercises. Projections for Full-Time Equivalent
Registered Nurses: 2000 to 2020
59. In 2020, the shortage of nurses is projected to be 3.0
533,201 more nurses than the shortage in 2010. If the Demand
total number of nurse shortages for these two years is 2.5
1,083,631, find the nurse shortage for each year.

60. The percent shortage of nurses in 2019 is predicted to Nurses (in millions) 2.0 Supply
be three times the percent shortage in 2007. If the total 1.5
percent shortages for these two years is 36%, find the
percent shortage in 2007 and the percent shortage in 1.0
2019. 0
2000 2004 2008 2012 2016 2020
Year
Source: Bureau of Health Professions, RN Suppy and Demand Projections
61. In Germany, about twice as many cars are 62. A Toyota Camry is traveling twice as fast as a Dodge
manufactured per day than in Spain. If the total truck. If their combined speed is 105 miles per hour,
number of these cars manufactured per day is 19,827, find the speed of the car and find the speed of the
find the number manufactured in Spain and the truck.
number manufactured in Germany.

63. A biker sold his used mountain bike and accessories 64. A tractor and a plow attachment are worth $1200.The
for $270. If he received five times as much money for tractor is worth seven times as much money as the
the bike as he did for the accessories, find how much plow. Find the value of the tractor and the value of
money he received for the bike. the plow.

65. The USA is the country with the most computers, 66. The total number of computers for Italy and Russia is
followed by Japan. If the USA has 162,550 million 56,280 million. If Italy has 2340 million more
more computers than Japan and the total number of computers than Russia, find the number of computers
computers for both countries is 318,450 million, find for each country.
the number of computers for each country.

Review

Round each number to the given place value. See Section 1.5.

67. 586 to the nearest ten 68. 82 to the nearest ten
69. 1026 to the nearest hundred 70. 52,333 to the nearest thousand
Copyright 2012 Pearson Education, Inc.
71. 2986 to the nearest thousand 72. 101,552 to the nearest hundred

Concept Extensions

73. Solve Example 4 again, but this time let x be the 74. Solve Exercise 43 again, but this time let x be the
distance from Chicago to Los Angeles. Did you get number of electoral votes for Florida. Did you get the
the same results? Explain why or why not. same results? Explain why or why not.