1. Determine which equation represents a function. A. B. x = 4 C. y = -2x + 1 D. x = y2 - 1 Hint 2. Find (3a - 1)(5a + 6). A. 15a2 - 5a - 6 B. 15a2 + 13a - 6 C. 15a2 + 13a + 6 D. 15a + 13a -6 Hint 3. Use synthetic division to find A. B. C. 2d3 - d2 + 2d - 4 + 5 D. Hint 4. Find the coordinates of the center of an ellipse with equation9x2 + 4y2 - 72x + 16y + 124 = 0. A. (4, 2) B. (2, 3) C. (4, 9) D. (4, -2) Hint 5. Solve the equation (x -2)(x + 2) = 0. A. 2 B. -2, 2 C. -2 D. 2, 0 Hint 6. Solve x2 - 4x - 5 = 0 by factoring. A. 1, -5 B. -1, -5 C. 1, 5 D. -1, 5 Hint 7. Solve  y2 + 8y + 16 = 0 by factoring. A. 4, 8 B. -4, 4 C. 4 D. -4 Hint 8. Graph f(x) = x3 - 4x2 + 2x – 3. A. B. C. D. Hint 9. Suppose a plant grows one inch every year. If x is how old the plant is (in years), and f (x) is how tall the plant is (in inches), what type of function is f (x)? A. constant function B. identity function C. absolute value function D. step function Hint 10. What is the y-intercept of the function y = 2x2 + 1 A. 3 B. 0 C. 1 D. none Hint 11. Find the minimum value of . A. 2 B. 7 C. (2, 7) D. 11 Hint 12. Write the expression in quadratic form. A. B. C. cannot be done, since D. Hint 13. What is the height of a computer whose base is x2 + 4x + 4 and whose volume is x3 + 3x2 – 4? A. (x – 1)( x + 2) B. x + 1 C. x – 1 D. x + 2 Hint 14. If a0 = 1 is the leading coefficient of a polynomial, which of the following cannot be a zero of the polynomial? A. 0 B. 1 C. D. 119 Hint 15. If f(7) = 12 and g(2) = 7, then what is the value of ? A. 12 B. 84 C. 2 D. 7 Hint 16. Which of the following points will not be included in the graph of? A. (5, 8) B. (6, 6) C. (1, 5) D. (3, 2) Hint 17. Simplify . A. B. C. D. Hint 18. What type of function is y = 2? A. constant B. direct variation C. rational D. absolute value Hint 19. The number of bacteria in a culture grew exponentially. When the experiment began, there were 100,000. Ten minutes later, that number grew to 220,000. Which of the following equations could be used to model this situation? A. B. C. D. Hint 20. Solve the equation 2 log 6 x – log 6 5 = log 6 125. A. 312.5 B. 25 C. no solution D. –25 Hint