1. Solve 3 < 2t - 1 < 15. A. {t | 3 < t < 8} B. {t | 2 < t < 16} C. {t | 4 < t < 16} D. {t | 2 < t < 8} Hint 2. State which ordered pair satisfies A. (0, 1) B. (1, 2) C. (0, 0) D. (1, 5) Hint 3. What is the first step in solving the system of equations using the elimination method? A. Add the equations. B. Subtract the second equation from the first equation. C. Multiply the second equation by 2. D. Solve the first equation for x. Hint 4. Use Cramer's rule to solve the system of equations. A. (0.011, 0.0055) B. (0.2, 0.4) C. (-0.4, -0.2) D. (0.4, 0.2) Hint 5. Solve the system of inequalities by graphing. A. B. C. D. Hint 6. Simplify A. B. C. D. Hint 7. Express using exponents. A. B. C. D. Hint 8. Simplify A. B. C. D. Hint 9. Which is the graph of the inequality  y <  x2 -2x - 8? A. B. C. D. Hint 10. Find the coordinates of the foci of a hyperbola with equation A. B. C. D. Hint 11. Find f(-2) for f(x) = 2x4 - x3 + 5x + 1. A. 31 B. -57 C. -21 D. -29 Hint 12. Identify the multiplicative inverse of 2.5. A. 0.4 B. 0.5 C. 0.25 D. 5.2 Hint 13. Solve the inequality | 5x + 2 | 12. A. B. C. D. Hint 14. Is the relation shown in the graph a function? Why or why not? A. No, the relation contains the ordered pairs (3, -1) and (3, 2). B. Yes, the relation contains very few ordered pairs. C. No, the relation contains the ordered pairs (0, -1) and (3, -1). D. Yes, the ordered pairs (-3, 2), (-1, 1), and (3, -1) form a straight line. Hint 15. Solve the system 4y – 6x + 8z = 13, 10y – 15x + 20z = 6, y – 5x + 2z = 5. A. (-3, 1, 7) B. no solution C. infinite solutions D. Hint 16. If and find 4A – 5B. A. B. C. D. Hint 17. Which of the following cannot be true concerning Cramer's Rule for two variables? A. B. C. D. Hint 18. Graph . Then estimate the coordinates at which the relative maxima and relative minima occur. A. minimum: –3,maximum: 1 B. minimum: –5,maximum: 1 C. minimum: 1,maximum: –5 D. minimum: 1, maximum: –3 Hint 19. If a binomial x – a divides a polynomial, what must be true in order for it to be a factor of the polynomial? A. The polynomial must be at least of degree three. B. The remainder must be 0. C. There cannot be any other factor x – a. D. It must divide the polynomial in half. Hint 20. What is the inverse of the relation (3, -1), (2, 5), (-4, -4)? A. (-1, 3), (5, 2), (4, 4) B. (-3, -1), (-2, 5), (4, -4) C. (1, -3), (-5, -2), (4, 4) D. (-1, 3), (5, 2), (-4, -4) Hint