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Waner & Costenoble - Finite Mathematics 7/e (Homework)

James Finch

Math - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 0 / 26

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

Last Saved : n/a Saving...  ()

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  • Instructions

    Finite Mathematics, 7th Edition, written by Stefan Waner and published by Cengage Learning, helps students see the relevance of mathematics in their lives, with many applications based on real, referenced data. This acclaimed resource is appropriate for all types of teaching and learning styles and supports a wide range of course formats, from traditional lectures and hybrid courses to strictly online courses. The WebAssign component for this title provides instructors with a course pack and engages students with Watch It links, eBook links, and a personal study plan.

    Question 1 includes a Watch It.

    Question 2 provides the student the opportunity to read from a table and to visualize the information on a graph.

    Question 3 shows a multi-part question.

    Questions 4 and 5 contain prompts that inform the student on how to enter a dependent answer or no answer. Thus, the question is presented to not give away the type of answer. In question 4, the grading accepts a word answer. In question 5, the grading accepts a comma-separated list of answers.

    Question 6 includes a Watch It.

    Question 7 contains grading where any equivalent form of the expression is accepted.

    Question 8 allows the student to enter the answer in factorial form.

    Question 9 features a statistics question with a Watch It. 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 WaneFM7 2.1.011. My Notes
Question Part
Points
Submissions Used
1
0/1
2/100
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0/1
 
Find the present value PV of the given investment. (Round your answer to the nearest cent.)
An investment earns 2% per year and is worth $10,000 after 9 years.
PV = $ Incorrect: Your answer is incorrect. seenKey

8,474.58

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2. 0/1 points  |  Previous Answers WaneFM7 2.1.038. My Notes
Question Part
Points
Submissions Used
1
0/1
1/100
Total
0/1
 
The following chart shows the monthly figures for Apple Computer, Inc. stock in 2010.†
Marked are the following points on the chart:
Calculate to the nearest 0.01% your annual percentage return r (on a simple interest basis) if you had bought Apple stock in January and sold in October.
r = Incorrect: Your answer is incorrect. seenKey

51.63

 %
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3. 0/3 points  |  Previous Answers WaneFM7 2.2.074. My Notes
Question Part
Points
Submissions Used
1 2 3
0/1 0/1 0/1
1/100 1/100 1/100
Total
0/3
 
Suppose that in January 2040, you buy a 30-year zero-coupon U.S. Treasury bond with a maturity value of $100,000 and a yield of 4% annually.
(a) How much do you pay for the bond? (Round your answer to the nearest cent.)
$ Incorrect: Your answer is incorrect. seenKey

30,831.87

(b) Suppose that, 15 years later, interest rates have risen again, to 10%. If you sell your bond to an investor looking for a return of 10%, how much money will you receive? (Round your answer to the nearest cent.)
$ Incorrect: Your answer is incorrect. seenKey

23,939.20

(c) Using your answers to parts (a) and (b), what will be the annual yield (assuming annual compounding) on your 15-year investment? (Round your answer to two decimal places.)
Incorrect: Your answer is incorrect. seenKey

-1.67

 %
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4. –/1 points WaneFM7 3.2.007. My Notes
Question Part
Points
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1
–/1
0/100
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–/1
 
Use Gauss-Jordan row reduction to solve the given system of equations. HINT [See Examples 1-6.] (If there is no solution, enter NO SOLUTION. If the system is dependent, express your answer in terms of x, where
y = y(x).)
2x + 7y = 9
−x − 
7y
2
 = − 
3
2
(x, y) = 
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5. –/1 points WaneFM7 3.2.025. My Notes
Question Part
Points
Submissions Used
1
–/1
0/100
Total
–/1
 
Use Gauss-Jordan row reduction to solve the given system of equations. HINT [See Examples 1-6.] (If there is no solution, enter NO SOLUTION. If the system is dependent, express your answer in terms of x, where
y = y(x)
 and
z = z(x).)
x − y + 8z = 3
x − y + 9z = 8
(x, y, z) = 

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6. –/6 points WaneFM7 4.2.013. My Notes
Question Part
Points
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1 2 3 4 5 6
–/1 –/1 –/1 –/1 –/1 –/1
0/100 0/100 0/100 0/100 0/100 0/100
Total
–/6
 
Compute the product. This exercise should be done two ways: by hand and by using technology where possible. HINT [See Example 3.] (If an answer is undefined, enter UNDEFINED.)
10−1
112
01−1
−10−1
280

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7. –/9 points WaneFM7 4.3.054. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8 9
–/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1
0/100 0/100 0/100 0/100 0/100 0/100 0/100 0/100 0/100
Total
–/9
 
The Arctic Juice Company makes three juice blends: PineOrange, using 2 quarts of pineapple juice and 2 quarts of orange juice per gallon; PineKiwi, using 3 quarts of pineapple juice and 1 quart of kiwi juice per gallon; and OrangeKiwi, using 3 quarts of orange juice and 1 quart of kiwi juice per gallon. The amount of each kind of juice the company has on hand varies from day to day. How many gallons of each blend can it make on a day with the following stocks? (Use matrix inverses to find the solutions.)
(a)    970 quarts of pineapple juice, 790 quarts of orange juice, 400 quarts of kiwi juice
PineOrange     gal
PineKiwi     gal
OrangeKiwi     gal

(b)    640 quarts of pineapple juice, 850 quarts of orange juice, 350 quarts of kiwi juice
PineOrange     gal
PineKiwi     gal
OrangeKiwi     gal

(c)    A quarts of pineapple juice, B quarts of orange juice, C quarts of kiwi juice
PineOrange    
gal
PineKiwi    
gal
OrangeKiwi    
gal
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8. –/3 points WaneFM7 6.4.071. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
0/100 0/100 0/100
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–/3
 
Suppose you are a salesperson who must visit the following 27 cities: Dallas, Tampa, Orlando, Fairbanks, Seattle, Detroit, Chicago, Houston, Arlington, Grand Rapids, Urbana, San Diego, Aspen, Little Rock, Tuscaloosa, Honolulu, New York, Ithaca, Charlottesville, Lynchville, Raleigh, Anchorage, Philadelphia, Phoenix, Jacksonville, Austin, and Los Angeles. Leave all your answers in factorial form.
(a) How many possible itineraries are there that visit each city exactly once?
intineraries

(b) Repeat part (a) in the event that the first six stops have already been determined.
intineraries

(c) Repeat part (a) in the event that your itinerary must include the sequence Anchorage, Fairbanks, Seattle, Chicago, and Detroit, in that order.
intineraries
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9. –/1 points WaneFM7 8.2.009. My Notes
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1
–/1
0/100
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–/1
 
You are performing 5 independent Bernoulli trials with p = 0.1 and q = 0.9. Calculate the probability of the stated outcome. Check your answer using technology. (Round your answer to five decimal places.)
At least three successes
P(X ≥ 3) =

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