Unit 2: Chapters 4, 5, & 6
GED 150 Mathematics Study Guide
Text Book : Basic College Mathematics
13th Edition, 2019 ISBN: 9780134689623
Marvin L. Bittinger, Judith A. Beecher, and Barbara L. Johnson
Pearson Education, Inc.
Please answer ONE of the following:
1. A student wanted to estimate 21.5 × 0.0079 by first rounding each number. He solved the problem as follows:
21.5 × 0.0079 is approximately equal to 20 × 0.008, which is equal to 0.016. So he estimated the answer as 0.016.
Do you agree with the answer? If not, explain where the student went wrong and give the correct answer.
2. In triangle A, the longest side is twice as long as the shortest side. In triangle B, the longest side is also twice as long as the shortest side. If this is the only information you have about the two triangles, can you conclude that they must be similar? Explain your answer.
3. The price of an item is reduced by 20% in a sale. Two weeks later the price is increased to 20% more than the sale price. Do you think that the item has been restored to its original price? If not, do you think its price is now higher or lower than the original price? Explain your thinking.
-Use a standard essay response to all questions (i.e. four to five paragraphs with three to five sentences per paragraph, including an introduction, middle paragraphs, and conclusion). All responses must be typed double-spaced, using a standard font and 12 point type size for ease of reading and grading.
• Begin each writing assignment by identifying the question number you are answering followed by the actual question itself (in bold type).
• Use a standard essay format for responses to all questions (i.e., an introduction, middle paragraphs, and conclusion).
• Responses must be typed double-spaced, using a standard font (i.e. Times New Roman) and 12 point type size.
Students who are successful in earning the maximum number of points tend to submit writing assignments that fall in the following ranges:
Undergraduate courses: 350 – 500 words per question.
