Math 107 Final Exam Answers

MATH 107 Final Exam Answers

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MATH 107 Final Exam Answers

There are 30 problems.
Problems #1–12 are Multiple Choice.
Problems #13–21 are Short Answer. (Work not required to be shown)
Problems #22–30 are Short Answer with work required to be shown.
MULTIPLE CHOICE
1. Determine the domain and range of the piecewise function. 1. ______
4 2
-4 -2 2 4
-2 -4
1. Domain [–3, 3]; Range [–2, 4]
2. Domain [–3, 3]; Range [0, 3]
3. Domain [–2, 4]; Range [–3, 3]
4. Domain [–1, 4]; Range [–2, 2]
5. Solve: 2x+ 20= x+ 6 2. ______
6. −8,−2
7. −2
8. −14
9. No solution
Page 1 of 11
College Algebra MATH 107 Spring, 2016, V1.7
3. Determine the interval(s) on which the function is decreasing. 3. ______
4. (–3.6, 0) and (6.7,∞)
5. (–2, 4)
6. (–∞, –2) and (4,∞)
7. (–1, 3)
4. Determine whether the graph of y= x−7 is symmetric with respect to the origin,
the x-axis, or the y-axis. 4. ______
1. symmetric with respect to the x-axis only
2. symmetric with respect to the y-axis only
3. symmetric with respect to the origin only
4. not symmetric with respect to the x-axis, not symmetric with respect to the y-axis, and not symmetric with respect to the origin
5. Solve, and express the answer in interval notation: | 5 – 6x|≥13. 5. ______
6. [4/3,∞)
7. (–∞,−4/3]∪ [3,∞)
8. (–∞, 3]∪ [−4/3,∞)
9. [–4/3, 3]
Page 2 of 11
College Algebra MATH 107 Spring, 2016, V1.7
6. Which of the following represents the graph of 9x− 2y = 18 ? 6. ______
7. B.
8. D.
Page 3 of 11
College Algebra MATH 107 Spring, 2016, V1.7
7. Write a slope-intercept equation for a line parallel to the line x + 3y = 8 which passes through the point (– 4, 5). 7. ______
8. y=−1 x+11
3 3
1. y=−1 x+5
3
1. y=1 x+5
3
1. y=−3x−7
2. Which of the following best describes the graph? 8. ______
3. It is the graph of an absolute value relation.
4. It is the graph of a function but not one-to-one
5. It is the graph of a function...