Page 161 - Basic College Mathematics with Early Integers

67. The coldest temperature ever recorded on Earth 68. The coldest temperature ever recorded in the
was -129°F in Antarctica.The warmest temperature United States was -80°F in Alaska.The warmest
ever recorded was 136°F in the Sahara Desert. temperature ever recorded was 134°F in California.
How many degrees warmer is 136°F than -129°F? How many degrees warmer is 134°F than -80°F?
(Source: Questions Kids Ask, Grolier Limited, 1991, (Source:The World Almanac, 2005)
and The World Almanac, 2005)

Solve.

69. Aaron Aiken has $125 in his checking account. He 70. A woman received a statement of her charge
writes a check for $117, makes a deposit of $45, and account at Old Navy. She spent $93 on purchases
then writes another check for $69. Find the balance last month. She returned an $18 top because she
in his account. (Write the amount as an integer.) didn’t like the color. She also returned a $26 night
shirt because it was damaged.What does she
actually owe on her account?
71. The temperature on a February morning is 72. Mauna Kea in Hawaii has an elevation of 13,796
-6° Celsius at 6 a.m. If the temperature drops feet above sea level.The Mid-America Trench in the
3 degrees by 7 a.m., rises 4 degrees between 7 a.m. Pacific Ocean has an elevation of 21,857 feet below
and 8 a.m., and then drops 7 degrees between 8 a.m. sea level. Find the difference in elevation between
and 9 a.m., find the temperature at 9 a.m. those two points. (Source: National Geographic
Society and Defense Mapping Agency)

Some places on Earth lie below sea level, which is the average level of the surface of the oceans. Use this diagram to
answer Exercises 73 through 76. (Source: Fantastic Book of Comparisons, Russell Ash)

Turfan Depression, Xinjiang, China: 505 ft 73. Find the difference in elevation between Death Valley
Qattâra Depression, Egypt: 436 ft and Quattâra Depression.
Poluostrov Mangyshlak, Kazakhstan: 433 ft
Danakil Depression, Ethiopia: 384 ft
Death Valley, US: 282 ft 74. Find the difference in elevation between Danakil and
Salton Sea, US: 236 ft
Turfan Depressions.

75. Find the difference in elevation between the two
lowest elevations shown.

76. Find the difference in elevation between the highest
elevation shown and the lowest elevation shown.

The bar graph shows heights of selected lakes. For Exercises 77 through 80, find the difference in elevation for the lakes
listed. (Source: U.S. Geological Survey)

Elevations of Selected Lakes 77. Lake Superior and Lake Eyre
700
600
600 512 78. Great Bear Lake and Caspian Sea
Feet Above or Below Sea Level 400 245 0 144 79. Lake Maracaibo and Lake Vanern
500

300
200
100

100
200 0 92 52 80. Lake Eyre and Caspian Sea Copyright 2012 Pearson Education, Inc.
Superior, Ontario, Caspian Maracaibo, Great Eyre, Vanern,
North North Sea, South Bear, Australia Europe
America America Asia- America North
Europe America
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