College Algebra (6th Edition)
College Algebra (6th Edition)
6th Edition
ISBN: 9780321916600
Author: Mark Dugopolski
Publisher: PEARSON
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Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
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Chapter 7.2, Problem 104E
To determine

To calculate: The time Al, Bob and Carl take to paint the house if they all work together.

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Chapter 7 Solutions

College Algebra (6th Edition)

Ch. 7.1 - True or False? Explain. A parabola with focus (0,...Ch. 7.1 - Prob. 2FTCh. 7.1 - Prob. 3FTCh. 7.1 - Prob. 4FTCh. 7.1 - Prob. 5FTCh. 7.1 - Prob. 6FTCh. 7.1 - Prob. 7FTCh. 7.1 - Prob. 8FTCh. 7.1 - Prob. 9FTCh. 7.1 - Prob. 10FT
Ch. 7.1 - Fill in the blank. A curve obtained by...Ch. 7.1 - Prob. 2ECh. 7.1 - Prob. 3ECh. 7.1 - Prob. 4ECh. 7.1 - Each of the following graphs shows a parabola...Ch. 7.1 - Prob. 6ECh. 7.1 - Prob. 7ECh. 7.1 - Prob. 8ECh. 7.1 - Each of the following graphs shows a parabola...Ch. 7.1 - Prob. 10ECh. 7.1 - Find the equation of the parabola with the given...Ch. 7.1 - Prob. 12ECh. 7.1 - Find the equation of the parabola with the given...Ch. 7.1 - Prob. 14ECh. 7.1 - Find the equation of the parabola with the given...Ch. 7.1 - Prob. 16ECh. 7.1 - Find the equation of the parabola with the given...Ch. 7.1 - Prob. 18ECh. 7.1 - Find the equation of the parabola with the given...Ch. 7.1 - Prob. 20ECh. 7.1 - Prob. 21ECh. 7.1 - Prob. 22ECh. 7.1 - Prob. 23ECh. 7.1 - Prob. 24ECh. 7.1 - Determine the vertex, focus, and directrix for...Ch. 7.1 - Prob. 26ECh. 7.1 - Prob. 27ECh. 7.1 - Prob. 28ECh. 7.1 - Determine the vertex, focus, and directrix for...Ch. 7.1 - Prob. 30ECh. 7.1 - Prob. 31ECh. 7.1 - Prob. 32ECh. 7.1 - Prob. 33ECh. 7.1 - Prob. 34ECh. 7.1 - Prob. 35ECh. 7.1 - Prob. 36ECh. 7.1 - Prob. 37ECh. 7.1 - Prob. 38ECh. 7.1 - Prob. 39ECh. 7.1 - Prob. 40ECh. 7.1 - Find the vertex, focus, and directrix of each...Ch. 7.1 - Prob. 42ECh. 7.1 - Prob. 43ECh. 7.1 - Prob. 44ECh. 7.1 - Prob. 45ECh. 7.1 - Prob. 46ECh. 7.1 - Find the vertex, focus, and directrix of each...Ch. 7.1 - Prob. 48ECh. 7.1 - Prob. 49ECh. 7.1 - Prob. 50ECh. 7.1 - Prob. 51ECh. 7.1 - Prob. 52ECh. 7.1 - Find the vertex, axis of symmetry, x-intercepts,...Ch. 7.1 - Find the vertex, axis of symmetry, x-intercepts,...Ch. 7.1 - Find the vertex, axis of symmetry, x-intercepts,...Ch. 7.1 - Prob. 56ECh. 7.1 - Find the vertex, axis of symmetry, x-intercepts,...Ch. 7.1 - Find the vertex, axis of symmetry, x-intercepts,...Ch. 7.1 - Find the vertex, axis of symmetry, x-intercepts,...Ch. 7.1 - Prob. 60ECh. 7.1 - Prob. 61ECh. 7.1 - Prob. 62ECh. 7.1 - Prob. 63ECh. 7.1 - Prob. 64ECh. 7.1 - Find the vertex, axis of symmetry, x-intercept,...Ch. 7.1 - Prob. 66ECh. 7.1 - Prob. 67ECh. 7.1 - Prob. 68ECh. 7.1 - Prob. 69ECh. 7.1 - Prob. 70ECh. 7.1 - Find the vertex, axis of symmetry, x-intercept,...Ch. 7.1 - Prob. 72ECh. 7.1 - Prob. 73ECh. 7.1 - Prob. 74ECh. 7.1 - Prob. 75ECh. 7.1 - Prob. 76ECh. 7.1 - Prob. 77ECh. 7.1 - Prob. 78ECh. 7.1 - Find the equation of the parabola determined by...Ch. 7.1 - Prob. 80ECh. 7.1 - Solve each problem. The Hale Telescope The focus...Ch. 7.1 - Prob. 82ECh. 7.1 - Prob. 83ECh. 7.1 - Prob. 84ECh. 7.1 - Prob. 85ECh. 7.1 - Prob. 86ECh. 7.1 - Prob. 87ECh. 7.1 - Prob. 88ECh. 7.1 - Prob. 89ECh. 7.1 - Prob. 90ECh. 7.1 - Prob. 91ECh. 7.1 - Prob. 92ECh. 7.1 - Prob. 93ECh. 7.1 - Prob. 94ECh. 7.1 - Prob. 95ECh. 7.1 - Prob. 96ECh. 7.1 - Prob. 1PQCh. 7.1 - Find the vertex, focus, and directrix for Ch. 7.1 - Prob. 3PQCh. 7.1 - For Individual or Group Explorations Tangent...Ch. 7.2 - True or False? Explain. 1. The x-intercepts for ...Ch. 7.2 - Prob. 2FTCh. 7.2 - Prob. 3FTCh. 7.2 - Prob. 4FTCh. 7.2 - Prob. 5FTCh. 7.2 - Prob. 6FTCh. 7.2 - Prob. 7FTCh. 7.2 - Prob. 8FTCh. 7.2 - Prob. 9FTCh. 7.2 - True or False? Explain. 10. The radius of the...Ch. 7.2 - Fill in the blank. The set of all points in a...Ch. 7.2 - Prob. 2ECh. 7.2 - Prob. 3ECh. 7.2 - Prob. 4ECh. 7.2 - Each of the following graphs shows an ellipse...Ch. 7.2 - Prob. 6ECh. 7.2 - Each of the following graphs shows an ellipse...Ch. 7.2 - Prob. 8ECh. 7.2 - Find the equation of each ellipse described below...Ch. 7.2 - Find the equation of each ellipse described below...Ch. 7.2 - Find the equation of each ellipse described below...Ch. 7.2 - Prob. 12ECh. 7.2 - Find the equation of each ellipse described below...Ch. 7.2 - Prob. 14ECh. 7.2 - Find the equation of each ellipse described below...Ch. 7.2 - Prob. 16ECh. 7.2 - Sketch the graph of each ellipse and identify the...Ch. 7.2 - Sketch the graph of each ellipse and identify the...Ch. 7.2 - Sketch the graph of each ellipse and identify the...Ch. 7.2 - Prob. 20ECh. 7.2 - Prob. 21ECh. 7.2 - Sketch the graph of each ellipse and identify the...Ch. 7.2 - Prob. 23ECh. 7.2 - Prob. 24ECh. 7.2 - Prob. 25ECh. 7.2 - Prob. 26ECh. 7.2 - Prob. 27ECh. 7.2 - Prob. 28ECh. 7.2 - Sketch the graph of each ellipse and identify the...Ch. 7.2 - Prob. 30ECh. 7.2 - Prob. 31ECh. 7.2 - Prob. 32ECh. 7.2 - Prob. 33ECh. 7.2 - Prob. 34ECh. 7.2 - Prob. 35ECh. 7.2 - Prob. 36ECh. 7.2 - Sketch the graph of each ellipse and identify the...Ch. 7.2 - Prob. 38ECh. 7.2 - Find the equation of each ellipse and identify its...Ch. 7.2 - Prob. 40ECh. 7.2 - Find the equation of each ellipse and identify its...Ch. 7.2 - Prob. 42ECh. 7.2 - Prob. 43ECh. 7.2 - Prob. 44ECh. 7.2 - Prob. 45ECh. 7.2 - Prob. 46ECh. 7.2 - Prob. 47ECh. 7.2 - Prob. 48ECh. 7.2 - Prob. 49ECh. 7.2 - Prob. 50ECh. 7.2 - Prob. 51ECh. 7.2 - Prob. 52ECh. 7.2 - Prob. 53ECh. 7.2 - Prob. 54ECh. 7.2 - Prob. 55ECh. 7.2 - Prob. 56ECh. 7.2 - Prob. 57ECh. 7.2 - Prob. 58ECh. 7.2 - Prob. 59ECh. 7.2 - Prob. 60ECh. 7.2 - Prob. 61ECh. 7.2 - Prob. 62ECh. 7.2 - Prob. 63ECh. 7.2 - Prob. 64ECh. 7.2 - Prob. 65ECh. 7.2 - Prob. 66ECh. 7.2 - Prob. 67ECh. 7.2 - Prob. 68ECh. 7.2 - Prob. 69ECh. 7.2 - Prob. 70ECh. 7.2 - Prob. 71ECh. 7.2 - Prob. 72ECh. 7.2 - Prob. 73ECh. 7.2 - Prob. 74ECh. 7.2 - Write each of the following equations in one of...Ch. 7.2 - Prob. 76ECh. 7.2 - Prob. 77ECh. 7.2 - Prob. 78ECh. 7.2 - Prob. 79ECh. 7.2 - Prob. 80ECh. 7.2 - Solve each problem. 81. Foci and a Point Find the...Ch. 7.2 - Solve each problem. Foci and Eccentricity Find the...Ch. 7.2 - Solve each problem. Focus of Elliptical Reflector...Ch. 7.2 - Prob. 84ECh. 7.2 - Solve each problem. Comet Hale-Bopp Comet...Ch. 7.2 - Prob. 86ECh. 7.2 - Prob. 87ECh. 7.2 - Solve each problem. Adjacent Circles A...Ch. 7.2 - Prob. 89ECh. 7.2 - Solve each problem. 90. Orbit of Mir The...Ch. 7.2 - Solve each problem. Tangent to an Ellipse It can...Ch. 7.2 - Prob. 92ECh. 7.2 - Prob. 93ECh. 7.2 - Prob. 94ECh. 7.2 - Prob. 95ECh. 7.2 - Prob. 96ECh. 7.2 - Prob. 97ECh. 7.2 - Prob. 98ECh. 7.2 - Prob. 99ECh. 7.2 - Prob. 100ECh. 7.2 - Prob. 101ECh. 7.2 - Prob. 102ECh. 7.2 - Prob. 103ECh. 7.2 - Prob. 104ECh. 7.2 - Prob. 1PQCh. 7.2 - Prob. 2PQCh. 7.2 - Prob. 3PQCh. 7.2 - Prob. LCCh. 7.3 - True or False? Explain. 1. The graph of is a...Ch. 7.3 - Prob. 2FTCh. 7.3 - Prob. 3FTCh. 7.3 - Prob. 4FTCh. 7.3 - Prob. 5FTCh. 7.3 - Prob. 6FTCh. 7.3 - Prob. 7FTCh. 7.3 - Prob. 8FTCh. 7.3 - Prob. 9FTCh. 7.3 - Prob. 10FTCh. 7.3 - Prob. 1ECh. 7.3 - Prob. 2ECh. 7.3 - Prob. 3ECh. 7.3 - Prob. 4ECh. 7.3 - Each of the following graphs shows a hyperbola...Ch. 7.3 - Prob. 6ECh. 7.3 - Prob. 7ECh. 7.3 - Prob. 8ECh. 7.3 - Determine the foci and the equations of the...Ch. 7.3 - Prob. 10ECh. 7.3 - Determine the foci and the equations of the...Ch. 7.3 - Prob. 12ECh. 7.3 - Determine the foci and the equations of the...Ch. 7.3 - Prob. 14ECh. 7.3 - Determine the foci and the equations of the...Ch. 7.3 - Prob. 16ECh. 7.3 - Prob. 17ECh. 7.3 - Prob. 18ECh. 7.3 - Prob. 19ECh. 7.3 - Prob. 20ECh. 7.3 - Sketch the graph of each hyperbola. Determine the...Ch. 7.3 - Prob. 22ECh. 7.3 - Prob. 23ECh. 7.3 - Prob. 24ECh. 7.3 - Prob. 25ECh. 7.3 - Sketch the graph of each hyperbola. Determine the...Ch. 7.3 - Prob. 27ECh. 7.3 - Prob. 28ECh. 7.3 - Find the equation of each hyperbola described...Ch. 7.3 - Prob. 30ECh. 7.3 - Prob. 31ECh. 7.3 - Prob. 32ECh. 7.3 - Prob. 33ECh. 7.3 - Prob. 34ECh. 7.3 - Find the equation of each hyperbola.Ch. 7.3 - Prob. 36ECh. 7.3 - Prob. 37ECh. 7.3 - Prob. 38ECh. 7.3 - Prob. 39ECh. 7.3 - Prob. 40ECh. 7.3 - Prob. 41ECh. 7.3 - Prob. 42ECh. 7.3 - Prob. 43ECh. 7.3 - Prob. 44ECh. 7.3 - Rewrite each equation in one of the standard forms...Ch. 7.3 - Prob. 46ECh. 7.3 - Prob. 47ECh. 7.3 - Prob. 48ECh. 7.3 - Prob. 49ECh. 7.3 - Prob. 50ECh. 7.3 - Prob. 51ECh. 7.3 - Prob. 52ECh. 7.3 - Solve each problem. 53. Telephoto Lens The focus...Ch. 7.3 - Prob. 54ECh. 7.3 - Prob. 55ECh. 7.3 - Prob. 56ECh. 7.3 - Prob. 57ECh. 7.3 - Prob. 58ECh. 7.3 - Prob. 59ECh. 7.3 - Prob. 60ECh. 7.3 - Prob. 61ECh. 7.3 - Prob. 62ECh. 7.3 - Prob. 63ECh. 7.3 - Prob. 64ECh. 7.3 - Prob. 65ECh. 7.3 - Prob. 66ECh. 7.3 - Prob. 67ECh. 7.3 - Prob. 68ECh. 7.3 - Transporting a Pipe Two corridors are 8 ft wide...Ch. 7.3 - 70. A Little Lagniappe A regulation basketball in...Ch. 7.3 - Prob. 1PQCh. 7.3 - Prob. 2PQCh. 7.3 - Prob. LCCh. 7 - For Exercises 1–6, sketch the graph of each...Ch. 7 - Prob. 2RECh. 7 - Prob. 3RECh. 7 - Prob. 4RECh. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - Sketch the graph of each ellipse, and determine...Ch. 7 - Prob. 8RECh. 7 - Prob. 9RECh. 7 - Sketch the graph of each ellipse, and determine...Ch. 7 - Sketch the graph of each ellipse, and determine...Ch. 7 - Prob. 12RECh. 7 - Prob. 13RECh. 7 - Prob. 14RECh. 7 - Prob. 15RECh. 7 - Prob. 16RECh. 7 - Prob. 17RECh. 7 - Prob. 18RECh. 7 - Prob. 19RECh. 7 - Prob. 20RECh. 7 - Prob. 21RECh. 7 - Prob. 22RECh. 7 - Prob. 23RECh. 7 - Prob. 24RECh. 7 - Prob. 25RECh. 7 - Prob. 26RECh. 7 - Sketch the graph of each hyperbola. Determine the...Ch. 7 - Prob. 28RECh. 7 - Prob. 29RECh. 7 - Prob. 30RECh. 7 - Prob. 31RECh. 7 - Prob. 32RECh. 7 - Prob. 33RECh. 7 - Prob. 34RECh. 7 - Prob. 35RECh. 7 - Prob. 36RECh. 7 - Prob. 37RECh. 7 - Prob. 38RECh. 7 - Prob. 39RECh. 7 - Prob. 40RECh. 7 - Prob. 41RECh. 7 - Prob. 42RECh. 7 - Prob. 43RECh. 7 - Prob. 44RECh. 7 - Prob. 45RECh. 7 - Prob. 46RECh. 7 - Prob. 47RECh. 7 - Determine the equation of each conic section...Ch. 7 - Prob. 49RECh. 7 - Prob. 50RECh. 7 - Prob. 51RECh. 7 - Prob. 52RECh. 7 - Prob. 53RECh. 7 - Prob. 54RECh. 7 - Prob. 55RECh. 7 - Prob. 56RECh. 7 - Prob. 57RECh. 7 - Prob. 58RECh. 7 - Prob. 59RECh. 7 - Prob. 60RECh. 7 - Solve each problem. Whispering Gallery In the...Ch. 7 - Prob. 62RECh. 7 - Prob. 63RECh. 7 - Prob. 1CTCh. 7 - Prob. 2CTCh. 7 - Prob. 3CTCh. 7 - Prob. 4CTCh. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Prob. 9CTCh. 7 - Determine whether each equation is the equation of...Ch. 7 - Prob. 11CTCh. 7 - Prob. 12CTCh. 7 - Prob. 13CTCh. 7 - Prob. 14CTCh. 7 - Prob. 15CTCh. 7 - Prob. 16CTCh. 7 - Prob. 17CTCh. 7 - Prob. 18CTCh. 7 - Prob. 19CTCh. 7 - Prob. 1TATCh. 7 - Prob. 2TATCh. 7 - Prob. 3TATCh. 7 - Prob. 4TATCh. 7 - Prob. 5TATCh. 7 - Prob. 6TATCh. 7 - Prob. 7TATCh. 7 - Prob. 8TATCh. 7 - Prob. 9TATCh. 7 - Prob. 10TATCh. 7 - Prob. 11TATCh. 7 - Prob. 12TATCh. 7 - Prob. 13TATCh. 7 - Prob. 14TATCh. 7 - Prob. 15TATCh. 7 - Prob. 16TATCh. 7 - Prob. 17TATCh. 7 - Prob. 18TATCh. 7 - Prob. 19TATCh. 7 - Prob. 20TATCh. 7 - Prob. 21TATCh. 7 - Prob. 22TATCh. 7 - Prob. 23TATCh. 7 - Prob. 24TATCh. 7 - Prob. 25TATCh. 7 - Prob. 26TATCh. 7 - Prob. 27TATCh. 7 - Prob. 28TATCh. 7 - Prob. 29TATCh. 7 - Prob. 30TATCh. 7 - Prob. 31TATCh. 7 - Prob. 32TATCh. 7 - Prob. 33TATCh. 7 - Prob. 34TATCh. 7 - Prob. 35TATCh. 7 - Prob. 36TATCh. 7 - Prob. 37TATCh. 7 - Prob. 38TATCh. 7 - Prob. 39TAT
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