Graphical Approach To College Algebra
Graphical Approach To College Algebra
7th Edition
ISBN: 9780134696522
Author: HORNSBY, John, Lial, Margaret L., Rockswold, Gary K.
Publisher: Pearson Education, Inc.,
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Concept explainers

Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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Question
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Chapter 3, Problem 1RE
To determine

To write: The number −4 in simplest form.

Expert Solution & Answer
Check Mark

Answer to Problem 1RE

The number −4 can be simplified as 2i_.

Explanation of Solution

Definition used:

“The imaginary unit i is defined as the principal square root of –1 in complex number system.

That is, i=−1 or i2=−1.”

Calculation:

Given that, the number is −4.

Simplify the number −4 as follows.

−4=−1⋅(22)                   (Factor out −1)=2−1                           (∵22=2 )=2i                                  (∵−1=i)

Thus, the number −4 can be simplified as 2i_.

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Chapter 3 Solutions

Graphical Approach To College Algebra

Ch. 3.1 - For each complex number, (a) state the real part,...Ch. 3.1 - Prob. 2ECh. 3.1 - Prob. 3ECh. 3.1 - Prob. 4ECh. 3.1 - Prob. 5ECh. 3.1 - For each complex number, (a) state the real part,...Ch. 3.1 - Prob. 7ECh. 3.1 - Prob. 8ECh. 3.1 - Prob. 9ECh. 3.1 - Prob. 10E
Ch. 3.1 - Prob. 11ECh. 3.1 - Prob. 12ECh. 3.1 - Prob. 13ECh. 3.1 - Prob. 14ECh. 3.1 - Prob. 15ECh. 3.1 - CONCEPT CHECK Determine whether each statement is...Ch. 3.1 - Prob. 17ECh. 3.1 - Prob. 18ECh. 3.1 - Prob. 19ECh. 3.1 - Prob. 20ECh. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Prob. 22ECh. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Prob. 24ECh. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Prob. 26ECh. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Prob. 28ECh. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Write each number in simplest form, without a...Ch. 3.1 - Prob. 32ECh. 3.1 - Prob. 33ECh. 3.1 - Prob. 34ECh. 3.1 - Prob. 35ECh. 3.1 - Prob. 36ECh. 3.1 - Prob. 37ECh. 3.1 - Prob. 38ECh. 3.1 - Prob. 39ECh. 3.1 - Prob. 40ECh. 3.1 - Prob. 41ECh. 3.1 - Prob. 42ECh. 3.1 - Prob. 43ECh. 3.1 - Prob. 44ECh. 3.1 - Add or subtract as indicated. Write each sum or...Ch. 3.1 - Prob. 46ECh. 3.1 - Prob. 47ECh. 3.1 - Prob. 48ECh. 3.1 - Add or subtract as indicated. Write each sum or...Ch. 3.1 - Prob. 50ECh. 3.1 - Prob. 51ECh. 3.1 - Prob. 52ECh. 3.1 - Add or subtract as indicated. Write each sum or...Ch. 3.1 - Prob. 54ECh. 3.1 - Prob. 55ECh. 3.1 - Multiply as indicated. Write each product in...Ch. 3.1 - Multiply as indicated. Write each product in...Ch. 3.1 - Prob. 58ECh. 3.1 - Prob. 59ECh. 3.1 - Prob. 60ECh. 3.1 - Multiply as indicated. Write each product in...Ch. 3.1 - Prob. 62ECh. 3.1 - Prob. 63ECh. 3.1 - Prob. 64ECh. 3.1 - Multiply as indicated. Write each product in...Ch. 3.1 - Prob. 66ECh. 3.1 - Prob. 67ECh. 3.1 - Prob. 68ECh. 3.1 - Multiply as indicated. Write each product in...Ch. 3.1 - Prob. 70ECh. 3.1 - Prob. 71ECh. 3.1 - Prob. 72ECh. 3.1 - Prob. 73ECh. 3.1 - Simplify each expression to i, 1, –i, or –1. i8 Ch. 3.1 - Prob. 75ECh. 3.1 - Prob. 76ECh. 3.1 - Prob. 77ECh. 3.1 - Prob. 78ECh. 3.1 - Prob. 79ECh. 3.1 - Prob. 80ECh. 3.1 - Prob. 81ECh. 3.1 - Prob. 82ECh. 3.1 - Prob. 83ECh. 3.1 - Prob. 84ECh. 3.1 - Prob. 85ECh. 3.1 - Prob. 86ECh. 3.1 - Prob. 87ECh. 3.1 - Prob. 88ECh. 3.1 - Prob. 89ECh. 3.1 - Prob. 90ECh. 3.1 - Prob. 91ECh. 3.1 - Prob. 92ECh. 3.1 - Prob. 93ECh. 3.1 - Prob. 94ECh. 3.1 - Divide as indicated. Write each quotient in...Ch. 3.1 - Prob. 96ECh. 3.1 - Prob. 97ECh. 3.1 - Prob. 98ECh. 3.1 - Divide as indicated. Write each quotient in...Ch. 3.1 - Prob. 100ECh. 3.1 - Prob. 101ECh. 3.1 - Divide as indicated. Write each quotient in...Ch. 3.1 - Divide as indicated. Write each quotient in...Ch. 3.1 - Prob. 104ECh. 3.1 - Prob. 105ECh. 3.1 - Prob. 106ECh. 3.1 - Prob. 107ECh. 3.1 - Suppose that your friend describes a method of...Ch. 3.2 - CONCEPT CHECK Match each function in Exercises 1–4...Ch. 3.2 - Prob. 2ECh. 3.2 - Prob. 3ECh. 3.2 - Prob. 4ECh. 3.2 - For each quadratic function, (a) write the...Ch. 3.2 - Prob. 6ECh. 3.2 - For each quadratic function, (a) write the...Ch. 3.2 - For each quadratic function, (a) write the...Ch. 3.2 - For each quadratic function, (a) write the...Ch. 3.2 - Prob. 10ECh. 3.2 - CHECKING ANALYTIC SKILLS For each quadratic...Ch. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - Prob. 15ECh. 3.2 - Prob. 16ECh. 3.2 - Prob. 17ECh. 3.2 - Prob. 18ECh. 3.2 - Prob. 19ECh. 3.2 - Prob. 20ECh. 3.2 - Prob. 21ECh. 3.2 - Use the graphs of the functions to do each of the...Ch. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - CHECKING ANALYTIC SKILLS For each quadratic...Ch. 3.2 - Prob. 26ECh. 3.2 - CHECKING ANALYTIC SKILLS For each quadratic...Ch. 3.2 - Prob. 28ECh. 3.2 - CHECKING ANALYTIC SKILLS For each quadratic...Ch. 3.2 - CHECKING ANALYTIC SKILLS For each quadratic...Ch. 3.2 - CHECKING ANALYTIC SKILLS For each quadratic...Ch. 3.2 - Prob. 32ECh. 3.2 - Prob. 33ECh. 3.2 - Prob. 34ECh. 3.2 - Prob. 35ECh. 3.2 - Prob. 36ECh. 3.2 - Prob. 37ECh. 3.2 - Graph each function in a viewing window that will...Ch. 3.2 - Prob. 39ECh. 3.2 - Prob. 40ECh. 3.2 - Prob. 41ECh. 3.2 - Prob. 42ECh. 3.2 - Prob. 43ECh. 3.2 - Prob. 44ECh. 3.2 - Prob. 45ECh. 3.2 - Prob. 46ECh. 3.2 - Prob. 47ECh. 3.2 - Prob. 48ECh. 3.2 - Prob. 49ECh. 3.2 - Prob. 50ECh. 3.2 - Prob. 51ECh. 3.2 - Prob. 52ECh. 3.2 - Prob. 53ECh. 3.2 - Prob. 54ECh. 3.2 - Prob. 55ECh. 3.2 - Prob. 56ECh. 3.2 - Prob. 57ECh. 3.2 - Prob. 58ECh. 3.2 - Prob. 59ECh. 3.2 - Prob. 60ECh. 3.2 - Prob. 61ECh. 3.2 - Prob. 62ECh. 3.2 - Prob. 63ECh. 3.2 - MODELING The formula for the height of a...Ch. 3.2 - Prob. 65ECh. 3.2 - Prob. 66ECh. 3.2 - Prob. 67ECh. 3.2 - Prob. 68ECh. 3.2 - Prob. 69ECh. 3.2 - Prob. 70ECh. 3.2 - Prob. 71ECh. 3.2 - Prob. 72ECh. 3.2 - Prob. 73ECh. 3.2 - Prob. 74ECh. 3.2 - Prob. 75ECh. 3.2 - Prob. 76ECh. 3.2 - Prob. 77ECh. 3.2 - Prob. 78ECh. 3.2 - Prob. 79ECh. 3.2 - Prob. 80ECh. 3.2 - Prob. 81ECh. 3.2 - Prob. 82ECh. 3.2 - Prob. 83ECh. 3.2 - Prob. 84ECh. 3.2 - Prob. 1RBCCh. 3.2 - Prob. 2RBCCh. 3.2 - Prob. 3RBCCh. 3.2 - Prob. 4RBCCh. 3.2 - Prob. 5RBCCh. 3.2 - Prob. 6RBCCh. 3.2 - Prob. 7RBCCh. 3.2 - Prob. 8RBCCh. 3.2 - Prob. 9RBCCh. 3.2 - Prob. 10RBCCh. 3.3 - Match each equation in Column I with its...Ch. 3.3 - Prob. 2ECh. 3.3 - Prob. 3ECh. 3.3 - Prob. 4ECh. 3.3 - Prob. 5ECh. 3.3 - Prob. 6ECh. 3.3 - Prob. 7ECh. 3.3 - Prob. 8ECh. 3.3 - Prob. 9ECh. 3.3 - Prob. 10ECh. 3.3 - Answer each question. Only one of the following...Ch. 3.3 - Prob. 12ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 18ECh. 3.3 - Prob. 19ECh. 3.3 - Prob. 20ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 22ECh. 3.3 - Prob. 23ECh. 3.3 - Prob. 24ECh. 3.3 - Prob. 25ECh. 3.3 - Prob. 26ECh. 3.3 - Prob. 27ECh. 3.3 - Prob. 28ECh. 3.3 - Prob. 29ECh. 3.3 - Prob. 30ECh. 3.3 - Prob. 31ECh. 3.3 - Prob. 32ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 34ECh. 3.3 - Prob. 35ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 37ECh. 3.3 - Prob. 38ECh. 3.3 - Prob. 39ECh. 3.3 - Prob. 40ECh. 3.3 - Prob. 41ECh. 3.3 - Prob. 42ECh. 3.3 - Prob. 43ECh. 3.3 - Prob. 44ECh. 3.3 - Prob. 45ECh. 3.3 - Prob. 46ECh. 3.3 - Prob. 47ECh. 3.3 - Prob. 48ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 50ECh. 3.3 - Prob. 51ECh. 3.3 - Prob. 52ECh. 3.3 - Solve each equation. For equations with real...Ch. 3.3 - Prob. 54ECh. 3.3 - Prob. 55ECh. 3.3 - Prob. 56ECh. 3.3 - Prob. 57ECh. 3.3 - Prob. 58ECh. 3.3 - Prob. 59ECh. 3.3 - Prob. 60ECh. 3.3 - Prob. 61ECh. 3.3 - Prob. 62ECh. 3.3 - Prob. 63ECh. 3.3 - Prob. 64ECh. 3.3 - Prob. 65ECh. 3.3 - Prob. 66ECh. 3.3 - Prob. 67ECh. 3.3 - Prob. 68ECh. 3.3 - Prob. 69ECh. 3.3 - Prob. 70ECh. 3.3 - Prob. 71ECh. 3.3 - Prob. 72ECh. 3.3 - Prob. 73ECh. 3.3 - Prob. 74ECh. 3.3 - Prob. 75ECh. 3.3 - Prob. 76ECh. 3.3 - CONCEPT CHECK For each pair of numbers, find the...Ch. 3.3 - Prob. 78ECh. 3.3 - CONCEPT CHECK For each pair of numbers, find the...Ch. 3.3 - Prob. 80ECh. 3.3 - CONCEPT CHECK For each pair of numbers, find the...Ch. 3.3 - Prob. 82ECh. 3.3 - CONCEPT CHECK For each pair of numbers, find the...Ch. 3.3 - Prob. 84ECh. 3.3 - Prob. 85ECh. 3.3 - Prob. 86ECh. 3.3 - Prob. 87ECh. 3.3 - Prob. 88ECh. 3.3 - Prob. 89ECh. 3.3 - Prob. 90ECh. 3.3 - Prob. 91ECh. 3.3 - Prob. 92ECh. 3.3 - Prob. 93ECh. 3.3 - Prob. 94ECh. 3.3 - Prob. 95ECh. 3.3 - Prob. 96ECh. 3.3 - Prob. 97ECh. 3.3 - Prob. 98ECh. 3.3 - Prob. 99ECh. 3.3 - Prob. 100ECh. 3.3 - Prob. 101ECh. 3.3 - Prob. 102ECh. 3.3 - Prob. 103ECh. 3.3 - Prob. 104ECh. 3.3 - Solve each inequality analytically. Support your...Ch. 3.3 - Prob. 106ECh. 3.3 - Solve each inequality analytically. Support your...Ch. 3.3 - Prob. 108ECh. 3.3 - Solve each inequality analytically. Support your...Ch. 3.3 - Prob. 110ECh. 3.3 - Solve each inequality analytically. Support your...Ch. 3.3 - Prob. 112ECh. 3.3 - Solve each inequality analytically. Support your...Ch. 3.3 - Prob. 114ECh. 3.3 - Solve each inequality analytically. Support your...Ch. 3.3 - Prob. 116ECh. 3.3 - Solve each formula for the indicated variable....Ch. 3.3 - Prob. 118ECh. 3.3 - Prob. 119ECh. 3.3 - Solve each formula for the indicated variable....Ch. 3.3 - Prob. 121ECh. 3.3 - Prob. 122ECh. 3.3 - Prob. 123ECh. 3.3 - Prob. 124ECh. 3.3 - Prob. 125ECh. 3.3 - Prob. 126ECh. 3.3 - Prob. 127ECh. 3.3 - Prob. 128ECh. 3.3 - Prob. 129ECh. 3.3 - Prob. 130ECh. 3.3 - Prob. 131ECh. 3.3 - Prob. 132ECh. 3.4 - CHECKING ANALYTIC SKILLS These exercises review...Ch. 3.4 - CHECKING ANALYTIC SKILLS These exercises review...Ch. 3.4 - CHECKING ANALYTIC SKILLS These exercises review...Ch. 3.4 - Prob. 4ECh. 3.4 - Prob. 5ECh. 3.4 - Prob. 6ECh. 3.4 - Prob. 7ECh. 3.4 - Prob. 8ECh. 3.4 - Prob. 9ECh. 3.4 - Prob. 10ECh. 3.4 - Prob. 11ECh. 3.4 - Prob. 12ECh. 3.4 - Prob. 13ECh. 3.4 - Prob. 14ECh. 3.4 - Prob. 15ECh. 3.4 - Prob. 16ECh. 3.4 - Hitting a Baseball A baseball is hit so that its...Ch. 3.4 - Prob. 18ECh. 3.4 - Prob. 19ECh. 3.4 - Prob. 20ECh. 3.4 - Volume of a Box A piece of cardboard is twice as...Ch. 3.4 - Volume of a Box A piece of sheet metal is 2.5...Ch. 3.4 - Prob. 23ECh. 3.4 - Prob. 24ECh. 3.4 - Prob. 25ECh. 3.4 - Prob. 26ECh. 3.4 - Height of a Dock A boat with a rope attached at...Ch. 3.4 - Prob. 28ECh. 3.4 - Prob. 29ECh. 3.4 - Prob. 30ECh. 3.4 - Picture Frame A frame for a picture is 2 inches...Ch. 3.4 - Prob. 32ECh. 3.4 - Apartment Rental The manager of an 80-unit...Ch. 3.4 - Prob. 34ECh. 3.4 - Prob. 35ECh. 3.4 - Prob. 36ECh. 3.4 - Path of a Frog’s Leap A frog leaps from a stump 3...Ch. 3.4 - Prob. 38ECh. 3.4 - Prob. 39ECh. 3.4 - Prob. 40ECh. 3.4 - Prob. 41ECh. 3.4 - Prob. 42ECh. 3.4 - Prob. 43ECh. 3.4 - Prob. 44ECh. 3.4 - Prob. 45ECh. 3.4 - Prob. 46ECh. 3.4 - Prob. 47ECh. 3.4 - Prob. 48ECh. 3.4 - Prob. 1RBCCh. 3.4 - Prob. 2RBCCh. 3.4 - Prob. 3RBCCh. 3.4 - Prob. 4RBCCh. 3.4 - Prob. 5RBCCh. 3.4 - Prob. 6RBCCh. 3.4 - Prob. 7RBCCh. 3.4 - Prob. 8RBCCh. 3 - Prob. 1RECh. 3 - Prob. 2RECh. 3 - Prob. 3RECh. 3 - Prob. 4RECh. 3 - Prob. 5RECh. 3 - Prob. 6RECh. 3 - Prob. 7RECh. 3 - Prob. 8RECh. 3 - Prob. 9RECh. 3 - Prob. 10RECh. 3 - Prob. 11RECh. 3 - Prob. 12RECh. 3 - Prob. 13RECh. 3 - Prob. 14RECh. 3 - Prob. 15RECh. 3 - Prob. 16RECh. 3 - Prob. 17RECh. 3 - Prob. 18RECh. 3 - Prob. 19RECh. 3 - Prob. 20RECh. 3 - Prob. 21RECh. 3 - Prob. 22RECh. 3 - Prob. 23RECh. 3 - Prob. 24RECh. 3 - Prob. 25RECh. 3 - Prob. 26RECh. 3 - Prob. 27RECh. 3 - Prob. 28RECh. 3 - Prob. 29RECh. 3 - Prob. 30RECh. 3 - Prob. 31RECh. 3 - Prob. 32RECh. 3 - Prob. 33RECh. 3 - Prob. 34RECh. 3 - Prob. 35RECh. 3 - Prob. 36RECh. 3 - Prob. 37RECh. 3 - Prob. 38RECh. 3 - Prob. 39RECh. 3 - Prob. 40RECh. 3 - Volume of a Box A piece of cardboard is 3 times as...Ch. 3 - Prob. 42RECh. 3 - Prob. 43RECh. 3 - Prob. 44RECh. 3 - Prob. 45RECh. 3 - Prob. 46RECh. 3 - Prob. 1TCh. 3 - Prob. 2TCh. 3 - Prob. 3TCh. 3 - Prob. 4TCh. 3 - Prob. 5TCh. 3 - Prob. 6TCh. 3 - Prob. 7TCh. 3 - Prob. 8TCh. 3 - Prob. 9TCh. 3 - Prob. 10TCh. 3 - Prob. 11TCh. 3 - Prob. 12TCh. 3 - Prob. 13TCh. 3 - Prob. 14TCh. 3 - Prob. 15TCh. 3 - Prob. 16TCh. 3 - Prob. 17TCh. 3 - Prob. 18TCh. 3 - Prob. 19TCh. 3 - Prob. 20T
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