math 120, review problems for exam #2.math.unm.edu/sites/default/files/files/core-courses/... ·...
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Math 120, Review Problems for Exam #2.Contents for the test: Chapter 2 (sections 1, 2, 3, 4, 5, 6 and 7), Chapter 3 (sections 1 and 2)This review consists of 43 problems. The first 34 problems are from the homework in MyMathLab (or the textbook). The last 9
problems are from the Workbook. The answers are at the end. A similar review can be found in the form of a practice Homework inMyMathLab named “Review for Exam 2” (but only the first 34 problems) . A mock test can also be found in MyMathLab named“Practice exam for Test 2.” (10 random questions chosen on the first 34 problems) .
35. WB. p. 84 , # 17
36. WB. p. 90 , # 10
37. WB. p. 96 , # 9
38. WB. p. 78 , # ’s 7-8
39. WB. p. 102 , # 18
40. WB. p. 108 , # ’s 11-12
41. WB. p. 114 , # 7
42. WB. p. 120 , # 14
43. WB. p. 126 , # 8
These problems can befound as a Homework in My-MathLab: Review for Exam 2.
It can also be found as apractice test in MyMathLab(10 random questions chosen):Practice exam for Test 2.
Finally in the pages that fol-low you can find the selectedproblems to print and workthem on paper.
The answers are at the endof the list of problems.
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7.
domain: (−∞,∞)
range: [−3,∞)
8.
domain: (−∞,∞)
range: (−∞,∞)
36. 5
37.
(a) 8
(b) {0, 7}(c) x = −4
(d) y = 5
(e) x = −4
38. −7
39. a = −15, b = −1 .
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11. {−1,− 12}
12.(−∞, 1
2
)∪ (1,∞)
41. 96 ft/sec.
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(a) y = −x2 + 5
2
(b) y = 2x
(c) x = 1, y = 2
43. airspeed= 150mph, impact of wind = 20mph
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