Page 131 - Basic College Mathematics with Early Integers

2 Integers and Introduction

to Variables

2.1 Introduction to Variables and
Algebraic Expressions
2.2 Introduction to Integers
2.3 Adding Integers
2.4 Subtracting Integers
Integrated Review—Integers
2.5 Multiplying and Dividing Integers
2.6 Order of Operations

Vocabulary Check
Chapter Highlights Thus far, we have studied whole numbers, but these numbers are not sufficient for representing many situations in
real life. For example, to express 5 degrees below zero or $100 in debt, numbers less than 0 are needed. This
Chapter Review
chapter is devoted to integers, which include numbers less than 0, and to operations on these numbers.
Chapter Test
Cumulative Review
hy isn’t Pluto on the graph below? You may know by now that Pluto is no
longer classified as a planet, but according to the International
WAstronomical Union (IAU), it is a dwarf planet. In fact, the IAU has named
5 dwarf planets since 2006 and more are on the way. Currently, we have the dwarf
planets named Ceres, Pluto, Makemake, Haumea, and Eris.
There are now 8 planets in the Solar System. They are Mercury, Venus, Earth,
Mars (the smaller, rocky ones), then Jupiter, Saturn, Uranus, and Neptune (the
larger, low-density gas giants).
In Section 2.2, Example 8 and Section 2.4, Exercises 63 through 66, we study the
average surface temperature of planets.
Average Surface Temperature of Planets*
1200
1000
867
800
Degrees Fahrenheit 200 0 330 59 81
600
400
200

400
600 162 218 323 330 Copyright 2012 Pearson Education, Inc.
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

*(For some planets, the temperature given is the temperature where the atmosphere pressure equals 1 Earth
atmosphere; Source: The World Almanac)
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