1. Find the equation of the axis of symmetry of the graph of y = 2x2 - 8x + 5. A. x = -2 B. x = 4 C. x = -4 D. x = 2 Hint 2. What are the real roots of the quadratic equation whose related function is graphed below? A. -3, 1 B. -1, -3 C. 3 D. 3, -1 Hint 3. Use the quadratic formula to solve x2 + 2x - 8 = 0. A. -4 B. -4, 2 C. -4, -2 D. -2 Hint 4. Use the quadratic formula to solve 3y2 + 2 = 8y. Approximate the solutions to the nearest hundredth. A. 0.56, 4.77 B. -0.64, 1.32 C. 0.43, 2.87 D. 0.28, 2.39 Hint 5. What is the y-intercept of the graph of y = 4x - 2? A. 0 B. -2 C. -1 D. Hint 6. Which equation represents exponential decay? A. y = 2.62(1.22)x B. y = 0.86(1.46)x C. y = 1.7(1.06)x D. y = 1.05(0.95)x Hint 7. Find the vertex of y = –2x2 + 4x – 3, and tell whether it is a maximum or minimum. A. (–1, 1), maximum B. (1, –1), maximum C. (–1, –9), maximum D. (1, 3), minimum Hint 8. In baseball, a pop fly should be easily caught if it stays in the air for 7 seconds. Suppose a ball that is hit can be represented by the function y = –16t2 + 125t + 5, where y is the height after t seconds. Will the ball be considered an easy catch? A. no, because t > 7 B. no, because t < 7 C. yes, because t < 7 D. yes, because t > 7 Hint 9. Solve x2 – 8x + 16 = 13 by taking the square root of each side. A. -4 B. 2 C. 4 D. -2 Hint 10. Solve x2 – 16x – 17 = 0 by completing the square. A. {–1, 13} B. {1, 13} C. {–1, 17} D. {1, 17} Hint 11. Use a graph to approximate 31.2. A. 3.12 B. 0.27 C. 3.7 D. 5.4 Hint 12. Suppose inflation of money is at a rate of 3% per year in the United States. How much will a \$1 candy bar cost in 30 years? A. \$1.90 B. \$2.43 C. \$4.32 D. \$0.40 Hint 13. Find the next two terms of the geometric sequence 50, 40, 32, … A. 25.6, 20.48 B. 26, 22 C. 28.5, 25.52 D. 24, 16 Hint 14. A formula in which the nth term of a sequence is expressed in terms of the previous term, as in is called what? A. dependent B. recursive C. exponential D. geometric Hint