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Larson & Hodgkins-College Algebra with Apps BLS (Homework)

James Finch

Math - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 37/37

Due: Friday, September 10, 2010 22:30 EDT

About this Assignment

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Question
Points
1 2 3 4 5 6 7 8 9
1 1 12 9 1 5 6 1 1
Total
37/37

Description

Here are some textbook questions from College Algebra with Applications for Business and the Life Sciences 1/e by Ron Larson and Anne V. Hodgkins published by Houghton Mifflin. Click here for a list of all of the questions coded in WebAssign.


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: LarCAABLS1 0.2.038.
Question part
Points
Submissions
1
1
3/50
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1/1
 
Identify the rule(s) of algebra illustrated by the statement. (Select all that apply.)
1
3
 (3 · 12) = (
1
3
 · 3)12 = 1 · 12 = 12

Your answer is correct.



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2. 1/1 points All Submissions Notes Question: LarCAABLS1 0.4.046.
Question part
Points
Submissions
1
1
1/50
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1/1
 
Rewrite the expression by rationalizing the denominator. Simplify your answer.
5x
√35 - 5
<math><mrow><mfrac><mrow><mfenced open='(' close=')'><mn>5</mn><mo>+</mo><msqrt><mn>35</mn></msqrt></mfenced><mi>x</mi></mrow><mn>2</mn></mfrac></mrow></math> Your answer is correct.

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3. 12/12 points All Submissions Notes Question: LarCAABLS1 0.4.048.SBS.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9 10 11 12
1 1 1 1 1 1 1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 2/50 1/50 1/50
Total
12/12
 
Rewrite the expression by rationalizing the denominator.
5
3√35 − 5
STEP 1: Rationalize the denominator.
5
3√35 − 5
=
5
3√35 − 5
×
3√
Enter an exact number.
Your answer is correct. Your answer is correct.
Enter an exact number.
Your answer is correct.
3√
Enter an exact number.
Your answer is correct. Your answer is correct.
Enter an exact number.
Your answer is correct.
=
5(3√
Enter an exact number.
Your answer is correct. Your answer is correct.
Enter an exact number.
Your answer is correct.)
Enter an exact number.
Your answer is correct. −
Enter an exact number.
Your answer is correct.

STEP 2: Simplify the expression.
<math><mrow><mfrac><mrow><mn>5</mn><mo>+</mo><mn>3</mn><msqrt><mn>35</mn></msqrt></mrow><mn>58</mn></mfrac></mrow></math> Your answer is correct.

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4. 9/9 points All Submissions Notes Question: LarCAABLS1 1.1.024.SBS.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9
1 1 1 1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50
Total
9/9
 
Solve the equation and check your solution.
3(15t − 15) + 2(t − 48) = 0
STEP 1: Expand.
Enter an exact number.
Your answer is correct. t −
Enter an exact number.
Your answer is correct. +
Enter an exact number.
Your answer is correct. t −
Enter an exact number.
Your answer is correct. = 0
STEP 2: Combine like terms.
Enter an exact number.
Your answer is correct. t −
Enter an exact number.
Your answer is correct. = 0
STEP 3: Solve for t.
Enter an exact number.
Your answer is correct. t		 =
Enter an exact number.
Your answer is correct.
t =
Enter an exact number.
Your answer is correct.

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5. 1/1 points All Submissions Notes Question: LarCAABLS1 1.1.026.
Question part
Points
Submissions
1
1
1/50
Total
1/1
 
Solve the equation and check your solution. (If there is no solution, enter NO SOLUTION.)
3[2x - (x + 7)] = 5(x - 5)
x =
Enter an exact number.
Your answer is correct.

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6. 5/5 points All Submissions Notes Question: LarCAABLS1 1.6.058.
Question part
Points
Submissions
1 2 3 4 5
1 1 1 1 1
1/50 1/50 1/50 1/50 1/50
Total
5/5
 
Consider the following inequality.
|
2x + 1
3
| ≤ 5
(a) Solve the inequality.
Enter an exact number as an integer, fraction, or decimal.
Your answer is correct. Your answer is correct. x Your answer is correct.
Enter an exact number as an integer, fraction, or decimal.
Your answer is correct.

(b) Graph the solution set on the real number line.

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

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7. 6/6 points All Submissions Notes Question: LarCAABLS1 2.1.026.
Question part
Points
Submissions
1 2 3 4 5 6
1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 3/50
Total
6/6
 
Consider the equation below.
y = 4 − x2
(a) Complete the table.
x -2 -1 0 1 2
y
Enter an exact number.
Your answer is correct.
Enter an exact number.
Your answer is correct.
Enter an exact number.
Your answer is correct.
Enter an exact number.
Your answer is correct.
Enter an exact number.
Your answer is correct.

(b) Use the solution points to graph the equation. (Plot every point and plot the graph.)

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


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8. 1/1 points All Submissions Notes Question: LarCAABLS1 2.1.112.
Question part
Points
Submissions
1
1
4/50
Total
1/1
 
Use the diagram of a ferris wheel to write an equation that models the circular shape of the wheel if d = 590 ft.
<math><mrow><msup><mi>x</mi><mn>2</mn></msup><mo>+</mo><msup><mfenced close=')' open='('><mi>y</mi><mo>-</mo><mn>295</mn></mfenced><mn>2</mn></msup><mo>=</mo><msup><mn>295</mn><mn>2</mn></msup></mrow></math> Your answer is correct.

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9. 1/1 points All Submissions Notes Question: LarCAABLS1 3.1.055.
Question part
Points
Submissions
1
1
1/50
Total
1/1
 
The image below shows the path of a diver.
The path of a diver is approximated by the following where y is the height (in feet) and x is the horizontal distance (in feet) from the end of the diving board.
y = −
4
9
 x2 +
24
9
 x + 12
What is the maximum height of the diver? Verify your answer using a graphing utility.
Enter an exact number.
Your answer is correct. ft

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