Page 229 - Basic College Mathematics with Early Integers

Recall from Section 3.2 that the following graph is called a circle graph or pie chart. Each sector (shaped like a piece of
pie) shows the fractional part of a car’s total mileage that falls into a particular category.The whole circle represents a
car’s total mileage.
3 In one year, a family drove 12,000 miles in the family car.
Vacation/other
Shopping 50
3 Use the circle graph to determine how many of these miles
25 might be expected to fall in the categories shown in
8
Work Exercises 79 through 82.
25
Social/
recreational 79. Work 80. Shopping
13
100
Medical 1
100
81. Family business 82. Medical
Family Visit friends 3
business 25
Q School/church 2
50
Source: The American Automobile Manufacturers Association and
The National Automobile Dealers Association

Review

Perform each indicated operation. See Sections 1.3 and 1.4.

83. 27 84. 811 85. 968 86. 882
76 42 - 772 - 773
+ 98 + 69

Concept Extensions

87. In your own words, describe how to divide fractions. 88. In your own words, explain how to multiply fractions.

Simplify.

1 2 5 3 8 2
#
89. a # b , 90. a b ,
2 3 6 4 9 5
42 125 7 8 39 8 2 1
91. # , 92. a # # b ,
25 36 6 13 16 9 2

Solve.

1
93. Approximately of the U.S. population lives in the 94. In a recent year, there were approximately 14,375
8
state of California. If the U.S. population is commercial radio stations broadcasting in the United
33
approximately 305,400,000, find the approximate States. Of these, approximately were news/talk
population of California. (Source: U.S. Census 625
Bureau) stations. How many radio stations were news/talk
stations in this year? (Source: Federal Communications
Commission)
3 2
95. The National Park Service is charged with 96. If of 36 students on a first bus are girls and of the
4 3
maintaining 27,000 historic structures. Monuments
63 30 students on a second bus are boys, how many Copyright 2012 Pearson Education, Inc.
and statues make up of these historic structures.
200 students on the two buses are girls?
How many monuments and statues is the National
Park Service charged with maintaining?
(Source: National Park Service)
206