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

James Finch

Math - College, section 1, Fall 2011

Instructor: Dr. Friendly

Current Score : 0 / 16

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

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0/4 0/4 0/4 0/2 0/1 0/1
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  • Description

    Here are some textbook questions from College Algebra 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: BZBca7 2.3.080.
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A video game manufacturer is planning to market a 64-bit version of its game machine. The fixed costs are $570000 and the variable costs are $110 per machine. The wholesale price of the machine will be $130.
(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.
2. –/4 points Notes Question: BZBca7 3.2.1-6.
Question part
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Submissions
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You are given the graph of a line.
(a) Use the graph to find the x-intercept, the y-intercept, and the slope.
Enter a number.
 (x intercept)
Enter a number.
 (y intercept)
Enter an exact number as an integer, fraction, or decimal.
 (slope)

(b) Write the slope-intercept form of the equation of the line.
Enter a mathematical expression or equation with exact values.


Your work in question(s) will also be submitted or saved.
3. –/4 points Notes Question: BZBca7 3.3.034.
Question part
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Submissions
1 2 3 4
0/1 0/1 0/1 0/1
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You are given the following equation.
y2 - x = 25

(a) Is this equation a function with independent variable x?
    


(b) If this equation is a function, find the domain. If it is not a function, enter NONE. If you need to enter - or , type -INFINITY or INFINITY.
(
Answer is not case sensitive.
,
Answer is not case sensitive.
)

(c) If this equation is not a function, which of these values of x corresponds to more than one value of y? (Select all that apply.)


Your work in question(s) will also be submitted or saved.
4. –/2 points Notes Question: BZBca7 4.1.020.
Question part
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Use synthetic division to write the quotient, Q, and indicate the remainder, R. If there is no remainder, enter 0.
(4x2 + 18x + 8) (x + 6)
Q =
Enter a mathematical expression.
Click here to preview your answer.
R =
Enter an exact number.

Click here for help with symbolic formatting.
Your work in question(s) will also be submitted or saved.
5. –/1 points Notes Question: BZBca7 5.3.078.
Question part
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Submissions
1
0/1
0/50
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0/1
 
Solve for x without using a calculator or table.
log7 4x - log7 (x + 1) = 1/2 log7 4
x =
Enter an exact number.

Your work in question(s) will also be submitted or saved.
6. –/1 points Notes Question: BZBca7 9.1.026.
Question part
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Submissions
1
0/1
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0/1
 
Find the equation of the parabola having its vertex at the origin, its axis as indicated, and passing through the indicated point.
y axis; (30, -15)
Enter a mathematical expression or equation with exact values.

Your work in question(s) will also be submitted or saved.
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