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Larson - Precalculus: A Concise Course 3/e (Homework)

James Finch

Math - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 28 / 29

Due : Sunday, January 27, 2030 00:00 EST

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5 6 7 8 9 10 11
2/2 3/3 –/0 3/3 4/4 3/3 5/5 1/1 4/4 1/1 2/2
Total
28/29 (96.6%)

  • 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.

    Read It - relevant textbook pages

    Watch It - videos of worked examples

    Master It - tutorials

    In this assignment we present several textbook question types found in Chapter 1 in Precalculus: A Concise Course 3/e by Ron Larson published by Cengage Learning.

    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. 2/2 points  |  Previous Answers LarPCalcCC3 1.3.050. My Notes
Question Part
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Submissions Used
1 2
1/1 1/1
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2/2
 
Find the slope-intercept form of the equation of the line that passes through the given point and has the indicated slope m.
Point    Slope
(−6, −2)    m =  
4
5
y =
45​(x+6)−2
Correct: Your answer is correct.

Sketch the line.
No Solution
Help
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Submission Data

Correct: Your answer is correct.
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2. 3/3 points  |  Previous Answers LarPCalcCC3 1.3.056.MI.SA. My Notes
Question Part
Points
Submissions Used
1 2 3
1/1 1/1 1/1
1/50 1/50 2/50
Total
3/3
 
This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part.

Tutorial Exercise
Find an equation of the line passing through the points. Sketch the line.
(9, 8),   (−9, −9)
Step 1
Compute the slope of the line.
17/18 Correct: Your answer is correct. seenKey

17/18
Step 2
Using one point and the slope, write the linear equation in point-slope form,
y − y1 = m(x − x1).
$$y−8=1718​(x−9)
Correct: Your answer is correct. webMathematica generated answer key
Step 3
Sketch the line.

Correct: Your answer is correct.
You have now completed the Master It.
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3. –/0 points LarPCalcCC3 1.3.013. My Notes
Question Part
Points
Submissions Used
Total
–/0
 
Estimate the slope of the line.
(No Response)
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4. 3/3 points  |  Previous Answers LarPCalcCC3 1.3.015. My Notes
Question Part
Points
Submissions Used
1 2 3
1/1 1/1 1/1
1/50 1/50 1/50
Total
3/3
 
Find the slope and y-intercept (if possible) of the equation of the line. (If an answer does not exist, enter DNE.)
y = 9x + 6
slope
9
Correct: Your answer is correct.
y-intercept     (x, y) =
0,6
Correct: Your answer is correct.

Sketch the line.
No Solution
Help
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Clear Graph
Delete Layer
Fill

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Submission Data

Correct: Your answer is correct.
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5. 4/4 points  |  Previous Answers LarPCalcCC3 1.4.061. My Notes
Question Part
Points
Submissions Used
1 2 3 4
1/1 1/1 1/1 1/1
1/50 1/50 1/50 1/50
Total
4/4
 
An open box of maximum volume is to be made from a square piece of material, 24 centimeters on a side, by cutting equal squares from the corners and turning up the sides as shown below.
(a) The table shows the volume V (in cubic centimeters) of the box for various heights x (in centimeters). Use the table to estimate the maximum volume.
Height, x 1 2 3 4 5 6
Volume, V 484 800 972 1024 980 864

Correct: Your answer is correct. cubic centimeters

(b) Plot the points (x, V) from the table in part (a). Does the relation defined by the ordered pairs represent V as a function of x?
     Correct: Your answer is correct.

(c) If V is a function of x, write the function. (If V is not a function of x, enter NONE.)
V =
x(24−2x)2
Correct: Your answer is correct.
Determine the domain of the function.
     Correct: Your answer is correct.
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6. 3/3 points  |  Previous Answers LarPCalcCC3 1.4.024. My Notes
Question Part
Points
Submissions Used
1 2 3
1/1 1/1 1/1
1/50 2/50 1/50
Total
3/3
 
Evaluate the function at each specified value of the independent variable and simplify. (If an answer is undefined, enter UNDEFINED.)
h(t) = t2 − 9t
(a)    
h(9)

0
Correct: Your answer is correct.

(b)    
h(1.9)

−13.49
Correct: Your answer is correct.

(c)    
h(x + 9)

x2+9x
Correct: Your answer is correct.
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7. 5/5 points  |  Previous Answers LarPCalcCC3 1.4.034. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5
1/1 1/1 1/1 1/1 1/1
1/50 1/50 1/50 1/50 1/50
Total
5/5
 
Complete the table.
h(t) = 
1
2
|t + 2|
t −5 −4 −3 −2 −1
h(t) Correct: Your answer is correct. Correct: Your answer is correct. Correct: Your answer is correct. Correct: Your answer is correct. Correct: Your answer is correct.
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8. 1/1 points  |  Previous Answers LarPCalcCC3 1.5.016.MI. My Notes
Question Part
Points
Submissions Used
1
1/1
2/50
Total
1/1
 
Find the zeros of the function algebraically. (Enter your answers as a comma-separated list.)
f(x) = 3x2 + 16x − 12
x =
−6,23​
Correct: Your answer is correct.

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9. 4/4 points  |  Previous Answers LarPCalcCC3 1.6.029. My Notes
Question Part
Points
Submissions Used
1 2 3 4
1/1 1/1 1/1 1/1
1/50 2/50 1/50 1/50
Total
4/4
 
Evaluate the function for the indicated values.
k(x) = 
1
2
x + 6
(a)    
k(4)

Correct: Your answer is correct.

(b)    
k(−6.6)

Correct: Your answer is correct.

(c)    
k(0.1)

Correct: Your answer is correct.

(d)    
k(13)

Correct: Your answer is correct.
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10. 1/1 points  |  Previous Answers LarPCalcCC3 1.7.048.MI. My Notes
Question Part
Points
Submissions Used
1
1/1
2/50
Total
1/1
 
Write an equation for the function that is described by the given characteristics.
The shape of f(x) = x2, but moved five units to the left, nine units upward, and then reflected in the x-axis
g(x) =
−((x+5)2+9)
Correct: Your answer is correct.

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11. 2/2 points  |  Previous Answers LarPCalcCC3 2.7.014. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
1/50 1/50
Total
2/2
 
Solve the inequality and graph the solution on the real number line.
x2 ≤ 49
     Correct: Your answer is correct.

Use the tools to enter your answer.
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