MAT 222 Algebra

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Follow the example and use the correct reference listed below for all discussion (Format: Times New Roman size: 12 single space) and assignment (Format: Times New Roman size: 12 double spaced) work when needed. I require all assignment no later than Saturday at 10am eastern standard time. Starting 20 Sept 14 ending 11 Sept 14. Discussions are due each Monday no later than 9am eastern standard time. Starting 22 Sept 14 and ending  06 Sept 14. If you complete all the work early and send it to me I will send full payment plus a bonus for finishing early at that time and I will still pay extra for all A+ work you receive. You have examples for all work if you need it.




Dugopolski, M. (2012).Elementary and intermediate algebra (4thed.) New York, NY: McGraw-Hill Publlishing.

Week 2 assignment math

Read the following instructions to complete this assignment:

1. Solve problem 68 on page 539 of Elementary and Intermediate Algebra, and make sure to study the given graph. For the purposes of the assignment, it would be helpful to copy the graph onto your own scratch paper.

2. Write a two- to three-page paper (not including the title page) that is formatted in APA style and according to the Math Writing Guide. Format your math work as shown in the  example  , and be concise in your reasoning. In the body of your essay, do the following:

· Demonstrate your solution to all three portions of the above problem, making sure to include all mathematical work, and an explanation for each step.

· Use the inequality you create from part (a) of problem 68 to evaluate the following two scenarios:

· The Burbank Buy More store is going to make an order which will include, at most, 60 refrigerators. What is the maximum number of TVs that could also be delivered on the same 18-wheeler? Be sure to show all your work and how you came to that conclusion.

· The next day, the Burbank Buy More decides they will have a television sale so they change their order to include at least 200 TVs. What is the maximum number of refrigerators that could also be delivered in the same truck? Be sure to show your work and how you came to that conclusion.


3. Incorporate the following five math vocabulary words into your discussion. Use bold font to emphasize the words in your writing (Do not write definitions for the words; use them appropriately in sentences describing your math work.):

· Solid line

· Dashed line

· Parallel

· Linear inequality

· Test point

For information regarding APA samples and tutorials, visit the Ashford Writing Center, within the Learning Resources tab on the left navigation toolbar.

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Running head: TWO-VARIABLE 1

Running header should use a shortened version of the title if the title is long. Page number is

located at right margin.



(full title; centered horizontally & vertically)

Two-Variable Inequalities

John Q. Student

MAT 222 Week 2 Assignment

Instructor’s Name





Two-Variable Inequalities (title required on first line)


Continuing last week’s topic of functions and relationships between variables, this

week’s work examines a practical application of two-variable inequalities. As the name implies,

there are independent and dependent variables, as well as graphic representations of the

solutions. Because of the inequality, the graphs and solutions demonstrate a range of possible

answers that would work in the given situation.

This problem is similar to #68 on page 539 (Dugopolski, 2012) for purposes of

demonstrating the math needed for this writing assignment. A shipping container can carry

maximum of 125 sofas and no recliners, or maximum of no sofas and 275 recliners. Study the

graph and write an equation to fit the line. Pretend the triangle region is shaded in and change the

equation to an inequality describing this region.


The diagram is showing the sofas on the x axis and the recliners on the y axis. There are

two points on the graph, (0, 275) and (125, 0), so we can compute the slope of this line.

The slope is




The point-slope form of a linear equation to write the equation itself can now be used.

These are the steps we take to arrive at our linear inequality.

Start with the point-slope form.

Substitute the slope for m and (275, 0) for the x and y.

Use distributive property and then add 275 to both sides.

Multiply both sides by 5.

Add 11x to both sides and change to less than or equal to symbol.

The graph has a solid line rather than a dotted line indicating that points on the line itself are

part of the solution set. This will be true anytime the inequality symbol has the equal to bar.

There are two more questions to answer in this section:

1. Will the shipping container hold 80 sofas and 200 recliners?

In other words is the point (80, 200) in the solution region. This is called a test point and it is

used to make sure the shading will fall on correct side of the line. To determine the actual

solution, the ordered pair must be substituted into the inequality created earlier. If a true

statement is made, the combination of sofas and recliners will work.

11x + 5y < 1375

11(80) + 5(200) ≤ 1375

880 + 1000 ≤ 1375

1880 < 375 This is a false statement so the container will not hold the amount given.


2. Will the shipping container hold 68 sofas and 125 recliners or will (68, 125) be in the

solution region?

This is another test point and will be worked the same way.




11x + 5y < 1375

11(68) + 5(125) ≤ 1375

748 + 625 ≤ 1375

1373 ≤ 1375 Yes, is certainly is, so this shipment would be possible.


The next problem requires a minimum and/or maximum range to be found. The Burbank

Buy More store is going to make an order, which will include at most 75 sofas. What is the

maximum number of recliners which could also be delivered in the same shipping container?

Describe the restrictions this would add to the existing graph. It is assumes they will get the

maximum number of sofas and plug 75 into the linear inequality and solve for y

11x + 5y < 1375

11(75) + 5y ≤ 1375 Substitute given value and multiply.

825+ 5y ≤ 1375 Subtract 825 on both sides.

5y ≤ 550 Divide both sides by 5.

y ≤ 110

The maximum number of recliners that could also be shipped in the same container is 110. The

graph would now have a horizontal line at y = 110 and a vertical line at x = 75, and the

rectangular shape would be shaded. The only possible shipment amounts would fall inside that


The next day, the Burbank Buy More decides they will have a recliner sale so they

change their order to include at least 170 recliners. What is the maximum number of sofas which

could also be delivered in the same truck? Describe the restrictions this would add to the original





11x + 5y < 1375

11x + 5(170) ≤ 1375 Substitute given value and multiply

11x + 850 ≤ 1375 Subtract 850 on both sides.

11x ≤ 525 Divide both sides by 11.

x ≤ 47 (rounded because partial pieces of furniture are not realistic)

If 170 recliners are shipped then the maximum possible sofas in the same shipping container

would be 47. The graph would now need to have a horizontal line at y = 170 and the enclosed

triangular shape above that line would be shaded. The possible shipment amounts with the

minimum number of recliners would fall inside that triangle.


Conclusion paragraph would go here. Remember to include 4-5 sentences to make a

complete paragraph.





Dugopolski, M. (2012). Elementary and intermediate algebra (4th ed.). New York, NY:

McGraw-Hill Publishing.



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