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Aufmann and Lockwood - Intermediate Algebra 9/e (Homework)

James Finch

Math - Developmental, section A, Fall 2019

Instructor: Dr. Friendly

Current Score : 19 / 22

Due : Monday, December 30, 2030 23:59 EST

Last Saved : n/a Saving...  ()

Question
Points
1 2 3 4 5 6 7 8 9 10 11 12
0/1 1/1 1/1 2/2 1/1 1/1 1/1 1/1 4/4 0/1 1/2 6/6
Total
19/22 (86.4%)
  • Instructions

    Create your course assignments by selecting questions from our bank of end-of-section exercises, as well as enhanced interactive examples with videos.

    Students can view and hear additional instruction through the 2-5 minute Watch It links. Students will also find helpful links to online excerpts from their textbook, tutorials, and videos.

    Every problem includes a link to the appropriate section of a complete interactive eBook, (also available through a dynamic table of contents from the student's WebAssign homepage), allowing students to highlight and take notes as they read.

    Master It - tutorials

    Watch It - videos of worked examples

    Many problems include detailed stepped-out solutions, available to students at each instructor's discretion. The solutions use the same algorithmic values assigned in the problem, further driving problem-solving mastery.

    This book also includes a Personal Study Plan (PSP). Once PSP is enabled for your course, your students can use chapter and section assessments to gauge their mastery of the material and generate individualized study plans that include various online, interactive multimedia resources.

    In this assignment we present several textbook question types found in Intermediate Algebra: An Applied Approach 9/e by Richard N. Aufmann and Joanne S. Lockwood published by Brooks/Cole. This textbook also includes Expanded Problem (EP) questions, which are expanded versions of existing questions that include intermediary steps to guide the student to the final answer. Also included are Responsive Questions (RQ), which personalize the learning experience for your students by asking them to use their own real data, which provides the variables they will use to answer each question part.

    Click here for a list of all of the questions coded in WebAssign. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

Assignment Submission

For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.

Assignment Scoring

Your last submission is used for your score.

1. 0/1 points  |  Previous Answers AufInterAlg9 1.1.096. My Notes
Question Part
Points
Submissions Used
1
0/1
2/50
Total
0/1
 
Graph.
{x | x 2} {x | x > 10}
Use the tools to enter your answer.
Created with Raphaël 2.1.0-10-8-6-4-20246810
Created with Raphaël 2.1.0

NO SOLUTION


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2. 1/1 points  |  Previous Answers AufInterAlg9 3.3.007. My Notes
Question Part
Points
Submissions Used
1
1/1
9/50
Total
1/1
 
Graph.
y = x 7
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
1
2
3
4
5
6
7
8
9
10
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
1
2
3
4
5
6
7
8
9
10

Graph LayersToggle Open/Closed

Submission Data

Correct: Your answer is correct.
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3. 1/1 points  |  Previous Answers AufInterAlg9 3.4.022. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
Total
1/1
 
Find the slope of the line containing the points with the given coordinates. (If an answer is undefined, enter UNDEFINED.)
(6, 9), (6, 5)
Correct: Your answer is correct.
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4. 2/2 points  |  Previous Answers AufInterAlg9 3.4.071. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
3/50 2/50
Total
2/2
 
For the given conditions, state whether the y-intercept of the graph of
Ax + By = C
lies above or below the x-axis, and whether the graph of
Ax + By = C
has positive or negative slope.
C and B are positive numbers, and A is negative number.
(a) Does the y-intercept of the graph of
Ax + By = C
lie above or below the x-axis?
     Correct: Your answer is correct.

(b) Does the graph of
Ax + By = C
have a positive or negative slope?
     Correct: Your answer is correct.

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5. 1/1 points  |  Previous Answers AufInterAlg9 3.5.010. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
Total
1/1
 
Find the equation of the line that contains the given point and has the given slope.
P(0, 9), m = 1
y = x + 9
Correct: Your answer is correct.

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6. 1/1 points  |  Previous Answers AufInterAlg9 3.5.098. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
Total
1/1
 
Given that f is a linear function for which
f(4) = 1
and
f(3) = 8,
determine
f(0).

f(0) = Correct: Your answer is correct.
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7. 1/1 points  |  Previous Answers AufInterAlg9 3.5.103.MI. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
Total
1/1
 
Find the equation of the line that passes through the midpoint of the line segment between P1(-1, 1) and P2(3, 3) and has slope -9. Let y be the dependent variable and let x be the independent variable.
y = 9x+ 11
Correct: Your answer is correct.

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8. 1/1 points  |  Previous Answers AufInterAlg9 3.6.016. My Notes
Question Part
Points
Submissions Used
1
1/1
1/50
Total
1/1
 
Is the graph of
y
3
5
x
3
2
perpendicular to the graph of
y =  
3
5
x
3
2
?
     Correct: Your answer is correct.
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9. 4/4 points  |  Previous Answers AufInterAlg9 3.6.016.EP. My Notes
Question Part
Points
Submissions Used
1 2 3 4
1/1 1/1 1/1 1/1
1/50 1/50 2/50 1/50
Total
4/4
 
Consider the graphs of the following lines.
y = 
4
9
x
5
4
 
y =  
4
9
x
5
4
Find the slope m of each each line.
y = 
4
9
x
5
4
    
m1 =  Correct: Your answer is correct.
y =  
4
9
x
5
4
    
m2 =  Correct: Your answer is correct.


Are the graphs of these lines perpendicular, parallel, or neither?
The slopes of the lines are Correct: Your answer is correct. each other. Therefore, the graphs of the lines are Correct: Your answer is correct. .
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10. 0/1 points  |  Previous Answers AufInterAlg9 3.7.017. My Notes
Question Part
Points
Submissions Used
1
0/1
2/50
Total
0/1
 
Graph the solution set.
x + 3y > 12
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
2
4
6
8
10
12
14
16
18
20
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
2
4
6
8
10
12
14
16
18
20

Submission Data

Incorrect: Your answer is incorrect.
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11. 1/2 points  |  Previous Answers AufInterAlg9 3.T.020. My Notes
Question Part
Points
Submissions Used
1 2
0/1 1/1
1/50 1/50
Total
1/2
 
The director of a baseball camp estimates that 100 students will enroll if the tuition is $250. For each $20 increase in tuition, 10 fewer students will enroll. Determine a linear function that will predict the number of students (y) who will enroll at a given tuition (x).
y =
10x +1250
Incorrect: Your answer is incorrect.

Use this model to predict enrollment when the tuition is $320.
Correct: Your answer is correct. students
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12. 6/6 points  |  Previous Answers AufInterAlg9 2.2.RQ.001. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6
1/1 1/1 1/1 1/1 1/1 1/1
1/50 1/50 1/50 1/50 1/50 1/50
Total
6/6
 
  • Part 1

    How can I predict how long it will take me to travel a nature trail?
    Use some information about a path or trail that you have previously traveled to predict your rate of travel. Recall that distance traveled is equal to the product of the rate of travel and the time:
    d = rt.
    The values you enter in this part will be used to make later calculations.
    Consider a path or trail that you have traveled before.
    How long is this path in miles?
    Correct: Your answer is correct. Your value is acceptable. mi
    How long, in hours, does it take you to travel this path from beginning to end?
    Correct: Your answer is correct. Your value is acceptable. hr
  • Part 2

    Use the values you entered in part 1 to determine the answer in this part.
    Use the equation
    d = rt
    to determine your rate of travel, in miles per hour, on this path. (Round your answer to the nearest tenth.)
    Correct: Your answer is correct. mph
  • Part 3

    Continue investigating this situation.
    Use the rate you found in part 2 and the equation
    d = rt
    to determine how long it would take you, in hours, to travel each of the trails below. (Round your answers to the nearest tenth.)
    Trail Name Distance Time (in hours)
    Matadero Creek Trail 1.5 miles Correct: Your answer is correct. hr
    WestCliff Drive Trail 3.4 miles Correct: Your answer is correct. hr
    Sabercat Creek Trail 11.2 miles Correct: Your answer is correct. hr
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Enter a number.
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Enter a fraction, integer, or exact decimal. Do not approximate.
Enter a fraction, integer, or exact decimal. Do not approximate.
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