Basic Mathematics for College Students

Refer to the following line graph, which shows the altitude of a
small private airplane.

71. How did the plane’s altitude change between times B
    and C?


72. At what time did the pilot first level off the airplane?


73. When did the pilot first begin his descent to land the
    airplane?


74. How did the plane’s altitude change between times D
    and E?

Refer to the following double-bar graph.

75. In which categories of moving violations have
    violations decreased since last month?


76. Last month, which violation occurred most often?


77. This month, which violation occurred least often?


78. Which violation has shown the greatest decrease in
    number since last month?

Refer to the following line graph.

79. What were the average weekly earnings in mining for
    the year 1980?


80. What were the average weekly earnings in
    construction for the year 1980?


81. Were the average weekly earnings in mining and
    construction ever the same?


82. What was the difference in a miner’s and a construction
    worker’s weekly earnings in 1995?


83. In the period between 2005 and 2008, which
    occupation’s weekly earnings were increasing
    more rapidly, the miner’s or the construction
    worker’s?

100

0

Reckless

driving

Failure

to yield

Speeding Following

too closely

200

300

400

500

600

Moving Violations

Last month

This month

Number of violations

A

Time

Altitude

B C D E F

84. Did the weekly earnings of a miner or a construction
    worker ever decrease over a five-year span?


85. In the period from 1980 to 2008, which workers
    received the greatest increase in weekly
    earnings?


86. In what five-year span was the miner’s increase in
    weekly earnings the smallest?

Refer to the following pictograph.

87. What is the daily parking rate for Midtown New
    York?


88. What is the daily parking rate for Boston?


89. How much more would it cost to park a car for five
    days in Boston compared to five days in San
    Francisco?


90. How much more would it cost to park a car for five
    days in Midtown New York compared to five days in
    Boston?

Midtown New York

Daily Parking Rates

Boston

San Francisco = $10

Source: Colliers International

1980

Source: Bureau of Labor Statistics

1985 1990 1995

Year

2000 2005 2008

$200

$100

$300

$400

$500

$600

$700

Mining and Construction: Weekly Earnings

Mining

Construction

$800

$900

$1,000

$1,100

7.1 Reading Graphs and Tables 607