# Math 1090.004 College Algebra Homework 02 Due: January

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Math 1090.004 College Algebra
Homework 02
Due: 23 January 2013
Name
SoLL1or.S
Student ID Number:
Instructions:
• Attach this cover sheet to the front of your homework assignment.
• Follow the Homework Guidelines listed on the course webpage.
• Solve the Part A problems on your own paper and attach.
• Solve the Part B problems listed in this handout and attach.
DO NOT WRITE IN THIS TABLE!!!
Quantity of Completed Homework Problems:
Homework
Quiz
1
out of 89
C
• Chapter 1.3
-
• Chapter 1.4
-
Text pages 21-26
Text pages 31-36
Part A:
• Chapter 1.3 Text pages: 27-30
Problems: 1-4, 16-21, 22-27, 33-35, 40-45, 53-58, 63-65, 74, 75-79, 8082, 86-88, 92-93, 95-97, 99, 102
-
• Chapter 1.4 Text pages: 37 40
Problems: 1-4. 9-12, 17-22, 14, 29-31, 66, 68, 69-71, 77-78
-
-
C
Part B:
Review of Ch 1.1 and 1.2
1. Solve for x and check your work:
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2. Solve for x and check your work:
[Hint: Factor the Denominator]
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What “special” step must always be completed with this
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3. The bus fare in a city is \$1.25. People who use the bus have an option
of purchasing a monthly coupoi book for \$21.00. With the coupon
book, the fare is reduced to \$0.50.
(a) Let x represent the number of times in a month the bus is used.
‘Write the algebraic expressions for the total monthly costs of using
the bus x times both with and without the coupon book.
[Hint: you should have two equations]
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(b) Determine the number of times in a month the bus must be used
so that the total monthly cost without the coupoii book is the
same as the total monthly cost with the coupon.
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4. On two examinations, you have grades of 86 and 88. There is an
optional final examination which counts as one grade. You decide to
take the final in order to get a course grade of an A, meaning a final
average of at least 90.
(a) What must you get on the final to earn an A in the course?
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(b) By taking the final, if you do poorly, you might risk the B that
you have in the course based on the first two exam grades (i.e. if
If your final average (including the final) is less than 80, you will
lose your B in the course. Describe the grades on the final that
will cause this to happen.
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C.
5. A business discovers a linear relationship between the number of shirts
it can sell and the price per shirt. In particular, 20,000 shirts can be
sold at \$19 each, and 2000 of the same shirts can be sold at \$55 each.
(a) Write the slope-intercept equation of the demand line through the
ordered pairs (20,000 shirts, \$19) and (2000 shirts, \$55)
point
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(b) Then determine the number of shirts that can be sold at \$50 each.
on:
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