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Marecek - Intermediate Algebra 1/e (Homework)

James Finch

Math - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 6 / 13

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

Last Saved : n/a Saving...  ()

Question
Points
1 2 3 4 5 6 7
1/1 2/2 3/4 –/3 –/1 –/1 0/1
Total
6/13 (46.2%)
  • Instructions

    WebAssign is proud to support the open source teaching community through our partnership with OpenStax. Intermediate Algebra, 1st edition, written by Lynn Marecek and published by OpenStax, is designed to meet the scope and sequence requirements of a one-semester intermediate algebra course. The book's organization makes it easy to adapt to a variety of course syllabi. The text expands on the fundamental concepts of algebra while addressing the needs of students with diverse backgrounds and learning styles. The material is presented as a sequence of clear steps, building on concepts presented in prealgebra and elementary algebra courses. The WebAssign online question content for this title is enriched with student learning resources and is offered as a low-cost option.

    Question 1 allows the student an opportunity to use the Pythagorean Theorem in a real-world application.

    Question 2 includes a link to a tutorial which guides the student through a step-by-step solution of the problem.

    Question 3 demonstrates how graphs reflect the standard practice of randomized numbers for problem solving.

    Question 4 includes a link to a tutorial which guides the student through a step-by-step solution of the problem.

    Question 5 includes prompts to direct the student to enter either a comma-separated list of values or enter NO SOLUTION.

    Question 6 features grading for exact answers when solving rational equations.

    Question 7 shows simplifying and rationalizing grading for square roots. 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.

    The answer key and solutions will display after the first submission for demonstration purposes. Instructors can configure these to display after the due date or after a specified number of submissions.

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. 1/1 points  |  Previous Answers OSInterAlg1 2.3.234. My Notes
Question Part
Points
Submissions Used
1
1/1
2/100
Total
1/1
 
Brian borrowed a 15foot extension ladder to use when he paints his house. If he sets the base of the ladder four feet from the house, how many feet up the side of the house will the top of the ladder reach? (Round your answer to one decimal place.)
15'
4'
Correct: Your answer is correct. seenKey

14.5

ft


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2. 2/2 points  |  Previous Answers OSInterAlg1 3.1.037.Tut. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
1/100 1/100
Total
2/2
 
Find the x- and y-intercepts from the equation of the line
x y = 5.
x-intercept
(x, y)
=
5,0
Correct: Your answer is correct. webMathematica generated answer key
y-intercept
(x, y)
=
0,5
Correct: Your answer is correct. webMathematica generated answer key
Tutorial



Solution or Explanation
To find an x-intercept, let
y = 0
and solve for x. To find a y-intercept, let
x = 0
and solve for y.
Find the x-intercept by letting
y = 0
and solving for x.
x y = 5
x 0 = 5
x = 5
The x-intercept is
(5, 0).
Find the y-intercept by letting
x = 0
and solving for y.
x y = 5
0 y = 5
y = 5
The y-intercept is
(0, 5).
Hence, for the line
x y = 5,
the x- and y-intercepts are the points
(5, 0)
and
(0, 5)
respectively.

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3. 3/4 points  |  Previous Answers OSInterAlg1 4.7.318. My Notes
Question Part
Points
Submissions Used
1 2 3 4
/1 1/1 1/1 1/1
0/100 4/100 1/100 1/100
Total
3/4
 
Translate to a system of inequalities and solve.
Caitlyn sells her drawings at the county fair. She wants to sell at least 50 drawings and has portraits and landscapes. She sells the portraits for $15 and the landscapes for $10. She needs to sell at least $600 worth of drawings in order to earn a profit.
(a)
Write a system of inequalities to model this situation. (Let p represent the number of portraits sold and let l represent the number of landscapes sold. Enter your answers as a comma-separated list of inequalities.)
(b)
Graph the system.

Correct: Your answer is correct.
(c)
Will she achieve her goal of number of drawings sold and make a profit if she sells 10 portraits and 35 landscapes?
     Correct: Your answer is correct.
(d)
Will she achieve her goal of number of drawings sold and make a profit if she sells 30 portraits and 30 landscapes?
     Correct: Your answer is correct.


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4. /3 points OSInterAlg1 5.1.063.Tut. My Notes
Question Part
Points
Submissions Used
1 2 3
/1 /1 /1
0/100 0/100 0/100
Total
/3
 
Evaluate
8y2 3y + 2
for the given values of y.
(a)
y = 5
(b)
y = 2
(c)
y = 0
Tutorial

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5. /1 points OSInterAlg1 6.5.278. My Notes
Question Part
Points
Submissions Used
1
/1
0/100
Total
/1
 
Solve. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
(3b + 1)(8b + 1) = 0
b =


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6. /1 points OSInterAlg1 7.4.241. My Notes
Question Part
Points
Submissions Used
1
/1
0/100
Total
/1
 
Solve.
1
p
 + 
2
q
 = 6
for p
p =


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7. 0/1 points  |  Previous Answers OSInterAlg1 8.5.261b. My Notes
Question Part
Points
Submissions Used
1
0/1
1/100
Total
0/1
 
Simplify and rationalize the denominator.
8
63
2327
Incorrect: Your answer is incorrect. webMathematica generated answer key


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Enter a number.
Enter an exact number.
Enter an exact number.
Enter an exact number.