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Crauder et al - Quantitative Literacy 2e (Homework)

James Finch

Math - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 10 / 35

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
8/8 2/2 –/5 –/2 –/10 –/1 –/1
Total
10/35 (28.6%)

  • Instructions

    Quantitative Literacy: Thinking Between the Lines, second edition, written by Bruce C. Crauder, Benny Evans, Jerry A. Johnson, and Alan V. Noell and published by W.H. Freeman, shows students that learning math in real-world contexts not only makes it easier to get better grades, but prepares them for decisions they’ll face about money, voting and politics, health issues, and much more. The authors draw on a wide range of examples to give students basic mathematical tools with coverage that neatly balances discussions of ideas with computational practice. The WebAssign component for this text will include question-level links to the eBook, a Course Pack with ready-to-use assignments, and a variety of textbook resources.

    All questions have links to the eBook.

    Question 1 uses a Venn diagram so students can easily visualize which regions they are identifying.

    Question 2 features equation grading to accept any correct form of the linear equation that models the situation.

    Question 5 has the student fill in a table of values based on the model described in the problem.

    Question 6 uses equation grading to accept any correct form of the exponential model.

    Question 7 lets the student enter a comma-separated list of the parents in the tree diagram.

    View the complete list of WebAssign questions available for this textbook.

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

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1. 8/8 points  |  Previous Answers CraudQL2 1.4.033. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8
1/1 1/1 1/1 1/1 1/1 1/1 1/1 1/1
1/5 1/5 1/5 1/5 1/5 1/5 1/5 1/5
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8/8
 
A survey of 150 students asked which of the following three beverages they liked: sodas, coffee, or bottled water. The results are given in the table below.
Sodas only 28
Coffee only 17
Water 51
Sodas and water 42
Coffee and water 27
Sodas and coffee but not water 9
Coffee and water, not sodas 6
All three 21

Use S for soda, W for water, and C for coffee, and make a Venn diagram for drinks. The completed diagram should show the number in each region.
WebAssign Plot 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. Correct: Your answer is correct. Correct: Your answer is correct. Correct: Your answer is correct.
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2. 2/2 points  |  Previous Answers CraudQL2 3.1.021. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
1/5 1/5
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2/2
 
Suppose that you are at the base of a hill and see a sign that reads "Elevation 3300 Feet." The road you are on goes straight up the hill to the top, which is 3 horizontal miles from the base. At the top, you see a sign that reads "Elevation 3900 Feet." What is the growth rate in your elevation with respect to horizontal distance as you drive up the road?
Correct: Your answer is correct. ft/mi

Use V for elevation in feet and h for horizontal distance in miles, and find a formula that gives your elevation as a linear function of your horizontal distance from the base of the hill.
V=200·h+3300
Correct: Your answer is correct.
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3. –/5 points CraudQL2 3.4.004. My Notes
Question Part
Points
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–/1 –/1 –/1 –/1 –/1
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–/5
 
(a) Find both the x- and y-values of the vertex of the parabola whose equation is
y = 2x2 − 12x + 5.
(x, y) =


(b) What value of x makes
3x2 − 18x + 5
 a minimum?
x =


What is this minimum value?
y =


(c) What value of x makes
7 + 8x − x2
 a maximum?
x =


What is this maximum value?
y =
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4. –/2 points CraudQL2 4.1.013. My Notes
Question Part
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1 2
–/1 –/1
0/5 0/5
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–/2
 
Suppose you invest $1000 in a savings account that pays an APR of 6%. If the account pays simple interest, what is the balance in the account after 20 years? (Round your answer to the nearest cent.)
$

If interest is compounded monthly, what is the balance in the account after 20 years? (Round your answer to the nearest cent.)
$
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5. –/10 points CraudQL2 4.3.044. My Notes
Question Part
Points
Submissions Used
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–/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1
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–/10
 
You begin saving for retirement at age 25, and you plan to retire at age 65. You want to deposit a certain amount each month into an account that pays an APR of 6% compounded monthly. Make a table that shows the amount you must deposit each month in terms of the nest egg you desire to have when you retire. (Round your answers to the nearest cent.)
Nest egg size Needed deposit
$100,000 $
$200,000 $
$300,000 $
$400,000 $
$500,000 $
$600,000 $
$700,000 $
$800,000 $
$900,000 $
$1,000,000 $
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6. –/1 points CraudQL2 4.4.020. My Notes
Question Part
Points
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1
–/1
0/5
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–/1
 
You have a balance of $1000 on your Visa credit card. Assume that you make no more charges on the card and that the card charges 9.9% APR and requires a minimum payment of 3% of the balance. Assume also that you make only the minimum payments.

Find a formula for the balance B after t monthly payments. (Enter numerical values to seven decimal places.)
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7. –/1 points CraudQL2 7.3.006. My Notes
Question Part
Points
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1
–/1
0/5
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–/1
 
List all parents in the figure below. (Enter your answers as a comma-separated list.)
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