WebAssign

Saturday, November 21, 2009 03:58 EST

Logged in as demo@demo

Logout

Home | My Assignments | Grades | Communication | Calendar

Guide | Help | My Options

Gustafson et al - College Algebra 10/e (Homework)

James Finch

Math - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 13/13

Due: Monday, September 6, 2010 19:00 EDT

About this Assignment

Ask Your Teacher popUp

Question

Points

1	2	3	4	5	6	7	8	9	10
1	1	1	1	2	1	1	1	2	2

Total

13/13

Description

Create your course assignments by selecting questions from our bank of over 1500 end-of-section exercises, as well as enhanced interactive examples with videos.

While doing their homework, students can link to the relevant interactive examples from the book and work through them again and again for additional practice before answering the question.

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, online-live help, tutorials, and videos.

Read It - relevant textbook pages

- videos of worked examples

Master It - tutorials

Chat About It - online, live help

In this assignment we present several textbook question types found in Chapter 3 on functions in College Algebra 10/e by R. David Gustafson, Peter D. Frisk, and Jeff Hughes published by Brooks/Cole.

Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.

1. 1/1 points All Submissions Notes Question: GFHColAlg10 3.4.012.

Question part

Points

Submissions

1
1
4/50

Total

1/1

The graph of the function is a translation of the graph of f(x) = x². Graph the function.

$g(x) = (x - {\color{red}10})^2$

Flash Player version 10 or higher is required for this question.
You can get Flash Player free from Adobe's website.

Need Help?

2. 1/1 points All Submissions Notes Question: GFHColAlg10 3.4.020.

Question part

Points

Submissions

1
1
3/50

Total

1/1

The graph of the function is a translation of the graph of f(x) = x³. Graph the function. (Select the correct graph.)

$g(x) = x^3 - {\color{red}2}$

Need Help?

3. 1/1 points All Submissions Notes Question: GFHColAlg10 3.4.098.

Question part

Points

Submissions

1
1
2/50

Total

1/1

Perform the division and write the answer in quotient + remainder/divisor form.

$\frac{x^2 + {\color{red}3}}{x + {\color{red}6}}$

$<math><mrow><mi>x</mi><mo>-</mo><mn>6</mn><mo>+</mo><mfrac><mn>39</mn><mrow><mi>x</mi><mo>+</mo><mn>6</mn></mrow></mfrac></mrow></math>$ Your answer is correct.

Need Help?

4. 1/1 points All Submissions Notes Question: GFHColAlg10 3.5.018.

Question part

Points

Submissions

1
1
1/50

Total

1/1

Suppose the cost (in dollars) of removing p% of the pollution in a river is given by the following function.

c = f(p) =

51810p

100 − p

(0 ≤ p < 100)

Find the cost of removing 80% of the pollution. (Round your answer to the nearest cent.)
$ Your answer is correct.

Need Help?

5. 2/2 points All Submissions Notes Question: GFHColAlg10 3.5.034.

Question part

Points

Submissions

1	2
1	1
1/50	1/50

Total

2/2

Find the vertical asymptotes, if any, of the rational function. Do not graph the function. (If an answer does not exist, enter DNE.)

$f(x) = \frac{x + {\color{red}7}}{x^2 - {\color{red}11}x - {\color{red}12}}$

x =

(smaller value)
x = Your answer is correct.

(larger value)

Need Help?

6. 1/1 points All Submissions Notes Question: GFHColAlg10 3.6.026.

Question part

Points

Submissions

1
1
1/50

Total

1/1

Let f(x) = x² − 6 and g(x) = 5x − 5. Find the value, if possible. (If not possible, enter IMPOSSIBLE.)
(f/g)(t) = $<math><mrow><mfrac><mrow><msup><mi>t</mi><mn>2</mn></msup><mo>-</mo><mn>6</mn></mrow><mrow><mn>5</mn><mi>t</mi><mo>-</mo><mn>5</mn></mrow></mfrac></mrow></math>$ Your answer is correct.

Need Help?

7. 1/1 points All Submissions Notes Question: GFHColAlg10 3.6.068.

Question part

Points

Submissions

1
1
1/50

Total

1/1

Let f(x) = x³. Find the function g(x) such that h(x) = (x − 3)³ can be expressed as (f compose

g)(x).
g(x) =

<math><mrow><mi>x</mi><mo>-</mo><mn>3</mn></mrow></math>

Need Help?

8. 1/1 points All Submissions Notes Question: GFHColAlg10 3.6.084.

Question part

Points

Submissions

1
1
1/50

Total

1/1

Let g(x) equal the following.

$g(x) = \frac{x}{x - {\color{red}15}}$

Find (g

g)(x).
(g compose

g)(x) = $<math><mrow><mfrac><mi>x</mi><mrow><mo>-</mo><mn>14</mn><mi>x</mi><mo>+</mo><mn>225</mn></mrow></mfrac></mrow></math>$ Your answer is correct.

Need Help?

9. 2/2 points All Submissions Notes Question: GFHColAlg10 3.7.038.

Question part

Points

Submissions

1	2
1	1
1/50	2/50

Total

2/2

Find the inverse of the one-to-one function.

$y = \frac{{\color{red}5}}{2}x$

f^-1(x) = $<math><mrow><mfrac><mrow><mn>2</mn><mi>x</mi></mrow><mn>5</mn></mfrac></mrow></math>$ Your answer is correct.

Graph both the function and its inverse on the same set of coordinate axes.

Flash Player version 10 or higher is required for this question.
You can get Flash Player free from Adobe's website.

Need Help?

10. 2/2 points All Submissions Notes Question: GFHColAlg10 3.R.024.

Question part

Points

Submissions

1	2
1	1
1/50	1/50

Total

2/2

Find the vertex of the parabola.

$f(x) = -2(x + {\color{red}9})^2 - {\color{red}9}$

(x, y) = ( Your answer is correct.

)

Home My Assignments Ask Your Teacher popUp