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Barnett, Ziegler, Byleen-College Algebra w/Trig 7e (Homework)

James Finch

Math - College, section 1, Fall 2011

Instructor: Dr. Friendly

Current Score : 0 / 23

Due : Monday, August 22, 2011 22:00 EDT

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  • Description

    Here are some textbook questions from College Algebra with Trigonometry 7/e by Barnett, Ziegler, and Byleen published by McGraw-Hill. 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.

Assignment Submission

For this assignment, the number of submissions for each answer box is counted independently. The number of submissions remaining changes only if you submit a new or changed answer.

1. –/4 points Notes Question: BZBCAT7 1.2.012.
Question part
Points
Submissions
1 2 3 4
0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50
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0/4
 
Perform the indicated operations and simplify.
4a - 4a[5 - 3(a + 2)]
Give your answer using the form AaB + Ca + D.
A =
Enter a number.

B =
Enter a number.

C =
Enter a number.

D =
Enter an exact number.

Your work in question(s) will also be submitted or saved.
2. –/4 points Notes Question: BZBCAT7 2.3.080.
Question part
Points
Submissions
1 2 3 4
0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50
Total
0/4
 
A video game manufacturer is planning to market a 64-bit version of its game machine. The fixed costs are $520000 and the variable costs are $130 per machine. The wholesale price of the machine will be $150.
(a) How many game machines must be sold for the company to make a profit?
x
Enter a number.

(b) How many game machines must be sold for the company to break even?
x
Enter a number.
Your work in question(s) will also be submitted or saved.
3. –/2 points Notes Question: BZBCAT7 3.3.010.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
You are given the following set.
{(-2, 2), (-1, 1), (0, 0), (1, 1), (2, 2)}
If the set defines a function, find the domain. (Select all that apply.)



If the set defines a function, find the range. (Select all that apply.)


Your work in question(s) will also be submitted or saved.
4. –/10 points Notes Question: BZBCAT7 3.5.036.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9 10
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/10
 
For the following functions f and g, find fg and gf and their domains. If you need to enter - or , type -INFINITY or INFINITY.
f(x) = sqrt(x+1)
g(x) = x-3
(a) fg =
Enter a mathematical expression.
Click here to preview your answer.
Click here for help with symbolic formatting.
domain of fg =
Answer is not case sensitive.
,
Answer is not case sensitive.

(b) gf =
Enter a mathematical expression.
Click here to preview your answer.
Click here for help with symbolic formatting.
domain of gf =
Answer is not case sensitive.
,
Answer is not case sensitive.
Your work in question(s) will also be submitted or saved.
5. –/3 points Notes Question: BZBCAT7 4.4.046.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
0/50 0/50 0/50
Total
0/3
 
You are given a function.
q(x) = x^5/(x^3-27)
Without graphing, find the vertical asymptote. If there is no vertical asymptote, enter NONE.
x =
Enter a number.


Without graphing, find the horizontal asymptote. If there is no horizontal asymptote, enter NONE.
y =
Answer is not case sensitive.


Without graphing, find the oblique asymptote. If there is no oblique asymptote, enter NONE (in caps).
y =
Enter a mathematical expression.
Click here to preview your answer.
Click here for help with symbolic formatting.
Your work in question(s) will also be submitted or saved.
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