Algebra Midterm
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math_037_midterm_exam_su17_2.pdf
Math 037 Midterm Exam
Term:
Professor: Dr. Kri Watson
Name________________________________
Instructions :
● The exam is worth 100 points. There are 15 problems, each worth 5 points. Your score on the exam will be converted to a percentage and posted in your assignment folder with
comments WITH a Khan Academy requirement. (SEE Part B.)
● This exam allows open book and open notes , and you may take as long as you like on it provided that you submit the exam no later than the due date posted in our course
schedule of the syllabus. You may refer to your textbook, notes, and online classroom
materials, but you may not consult anyone. ● You should show all of your work to receive full credit. If you do not show work, you
may earn only partial or no credit.
● Please type your work in your copy of the exam, or if you prefer, create a document containing your work. Scanned work is also acceptable. Be sure to include your name in
the document. Review instructions for submitting your exam in the Exams Module.
● If you have any questions, please contact me by e-mail (kriesta.watson @faculty.umuc.edu ).
Math 037
Midterm Exam
Please remember to show all work on the exam. PART A. 1) Simplify the following expression:
2) Simplify the following expression:
3) Simplify the radical expression:
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4) Evaluate the following expression for and
5) Solve the equation. Show all work and show the complete check of your answer:
6) Solve the equation. Show all work and show the complete check of your answer:
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Midterm Exam
7) The formula for area of a triangle is given by , where A = area of the triangle, b = length of the base of the triangle, and h = height of the triangle. a) Solve the formula for h . b) Use the new version of the formula you found in part (a) to find the height of a triangle that has an area of 28 square inches and a base length of 8 inches. Show all work and write a complete answer, including units.
8) Solve the inequality. Write the answer in set-builder notation and graph the solution set on a number line.
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Midterm Exam
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Midterm Exam
9) In a sample of 2400 new iPhones, 18 were found to be defective. At this rate, how many defective iPhones would be expected in a sample of 10,000 new iPhones? Use a proportion to set up and solve this problem. 10) Student enrollment at a university was 8500 last year and 9200 this year. Find the percentage increase in enrollment, rounding your answer to the nearest tenth of a percent.
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Midterm Exam
#11 - #15) You are an environmental scientist studying the causes of global warming, and you are using the data in the table below to determine the rate of increase in Global Carbon Emissions Per Capita (per person) over time. Use the data in the table to answer the questions that follow.
Year
(x)
Global Carbon
Emissions Per Capita
(metric tons)
(y) 2000 1.104
2001 1.11651
2002 1.11386
2003 1.16641
2004 1.21308
2005 1.24238
2006 1.26948
2007 1.28366
2008 1.30048
2009 1.27876
2010 1.32544
Year
(x)
Global Carbon
Emissions Per Capita
(metric tons)
(y) 1751 0.00367
1775 0.00442
1800 0.00808
1825 0.01532
1850 0.04277
1875 0.13091
1900 0.32364
1925 0.49942
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1950 0.64683
1975 1.12896
Source : http://www.ourworldindata.org/data/resources-energy/CO2-emissions #11) By how much did global per capita carbon emissions change from 1775 to 1800? Show all work and write a complete answer, including units. #12) By how much did global per capita carbon emissions change from 1875 to 1900? Show all work and write a complete answer, including units. #13) By how much did global per capita carbon emissions change from 1975 to 2000? Show all work and write a complete answer, including units.
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Math 037
Midterm Exam
14) Find the percentage increase in per capita carbon emissions from 1850 to 1900. Show all work and write a complete answer, including units. 15) Find the percentage increase of per capita carbon emissions from 1950 to 2000. Show all work and write a complete answer, including units.
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Midterm Exam
PART B. Your MidTerm grade will be comprised of:
1. Math Assessment, Part A (representing 80 percent of the grade) 2. Khan Academy (KA) time, Part B (representing 20 percent of the grade).
Total MidTerm is 100 percent.
Therefore, you will be expected to work your track in order to receive part of your quiz grade. PARTICULARLY, you are expected to work the following tracks for Part B: https://www.khanacademy.org/math/algebra-basics/alg-basics-linear-equations-a nd-inequalities https://www.khanacademy.org/math/pre-algebra/pre-algebra-ratios-rates?t=practi ce You must complete at least 120 minutes within KA to receive a 'A" or 100% for the Part B of the grade. Your grade will be based on the number of minutes completed in KA divide by 120 indicated on the KA Report. So, the percent will be constructed in this manner. NOTE: Failure to do so means that your quiz grade cannot be more than a 80% for the other part of the assignment. I strongly suggest you start your track today! I have completed the following amount of minutes using Khan Academy. ENTER THE AMOUNT OF MINUTES AS OF July 20 for the period of July 13 to July 20: EXTRA CREDIT: The Mid-Term examination will contain extra credit using 1) Khan Academy FOR completing time over 150 minutes (3 + points), 2) submitting the SurveyMonkey's “Weekly Assignment Report” (2 + points), and 3) responding to the following discussion thread, "Communicating Math Online " Forum.
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I have read and comply with this grading element. End of exam: please do not forget to write and sign (or type) the required statement explained in the box on Page 1 of the exam.
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