1. Which is the graph of the inequality y |x - 3|? A. B. C. D. Hint 2. If you solve the following system of equations by elimination, which of the following is the best choice for the first step?2x + y - z = 3x + y + z = 5x - 2y + z = 2 A. Both methods will work. B. Add the first and second equations to eliminate the z variable. C. Subtract the second and third equation to eliminate the z variable. D. Neither method will work. Hint 3. Which of the following shows the system of equations using a matrix equation? A. B. C. D. Hint 4. Solve the systems of equations by using matrix equations. A. B. C. D. Hint 5. The graph of the system of inequalities is shown below. Name the coordinates of the vertices of the polygonal set. A. (-1, 1), (-1, 4), and (2, 1) B. (1, -4), (3, 0), and (0, 1) C. (1, -1), (-1, 3), and (2, 1) D. (0, 0), (2, 0), and (2, 6) Hint 6. Use the parent graph f(x) = to graph the functiong(x) = ; identify the new location of each asymptote. A. The vertical asymptote is at x = 0, and the horizontal asymptote is at y = -3. B. The vertical asymptote is at x = 3 and the horizontal asymptote is at y = 1. C. none of these D. The vertical asymptote is at x = -3, and the horizontal asymptote is at y = 0. Hint 7. Ten years ago, Mary invested \$2500. Four years later, she invested \$3000. Set up an equation that determines the current value of the two investments T(x) if each earns 10% annual interest per year. A. T(x) = 2500(1.1)10 + 3000(1.1)6 B. T(x) = 2500(1.1)10 + 3000(1.1)4 C. T(x) = 3000(1.0)10 + 2500(1.1)6 D. T(x) = 3000(1.0)10 + 2500(1.1)4 Hint 8. The roots of the equation x2 - 8x - 20 = 0 are ____. A. 2 and 10 B. -2 and -10 C. -2 and 10 D. 2 and -10 Hint 9. Choose the angle measure represented by 4.7 rotations clockwise. A. -846° B. 1692° C. -1692° D. 846° Hint 10. If f = 9 and d = 13, find the measure of . A. about 43.8° B. about 46.2° C. about 55.3° D. about 34.7° Hint 11. Determine the number of possible solutions for , given B = 100°, b = 7, and c = 9. A. three B. none C. two D. one Hint 12. Find the period of the function y = csc - 5. A. B. 4 C. 8 D. Hint 13. Given f(x) = x-5 and g(x) = x2+ 3,find (f · g)(x). A. x2 –2x-15 B. x3 –5x2 +3x -15 C. x3 +5x2 +3x-15 D. 4x3 –2x Hint 14. Ilene analyzed her test scores and determined the equation of the best-fit line was y = 4.25x + 72. Predict her score for the 5th test. A. 93.25 B. 88.75 C. 98.5 D. 72.5 Hint 15. Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. A. Paul's test scores improve an average of 3 points with each test. B. Paul's test scores are neither increasing nor decreasing. C. Paul's test scores improve an average of 15 points with each test. D. Paul's test scores improve an average of 5 points with each test. Hint 16. Which of the following describes the system of equations x - 3y + 2 = 0 and 2x - 6y + 4 = 0? A. Consistent and dependent B. Consistent and independent C. none of these D. Inconsistent Hint 17. The quadrilateral with vertices A(-1,5), B(2,7), C(4,5) and D(3,3) is reflected over the line y = x . Find the image of the quadrilateral after the reflection. A. B. C. D. Hint 18. Which is an odd function? A. B. C. D. Hint 19. Solve |3x + 5| - 4 < 2. A. B. C. D. Hint 20. Given the function f(x) = , find the inverse. A. f -1(x) = B. f -1(x) = 1 C. f -1(x) = 4 D. f -1(x) = x - 4 Hint