1. Solve 7(2k + 4) - (3k + 1) = 49. A. 1.8 B. 2 C. 1 D. 4 Hint 2. Evaluate |-6p| if p = 2. A. 0 B. 3 C. 12 D. -12 Hint 3. Write in standard form where A, B, and C are integers whose greatest common factor is 1. A. 3x + 8y = 16 B. 3x - 8y = 16 C. D. 3x - 8y = 2 Hint 4. The temperature f(x) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where x is the depth in feet of the water. What would be the temperature of water 30 feet below the surface? A. 111°F B. 63°F C. 71.25°F D. 33°F Hint 5. A graph of a system of three linear equations in three variables is shown below. How many solutions does the system have? A. 0 B. 2 C. infinite number D. 1 Hint 6. What is the equation of the directrix of the parabola with equation y = (x + 4)2 - 2? A. B. x = - 2 C. y = - 2 D. Hint 7. Manufacturing A company sells one of its products in boxes that are twice as long as they are wide, and 2 inches higher than they are long. Find the dimensions of such a box if the volume is 320 cubic inches. A. 4 in. by 8 in. by 10 in. B. 6 in. by 12 in. by 14 in. C. 4 in. by 8 in. by 6 in. D. 4 in. by 8 in. by 20 in. Hint 8. Which equation is in quadratic form? A. B. C. x4 - x2 + x - 1 = 0 D. 3x3 + 3x + 3 = 0 Hint 9. If f(x) = 2x and g(x) = x + 4, find A. 13 B. -1 C. 7 D. 1 Hint 10. Find the sum of the first five terms of the geometric series for which a1 = 2 and r = 2. A. 62 B. 14 C. 30 D. 126 Hint 11. Juanita started a savings account with the \$200 she received for her birthday. The bank pays 4% interest compounded annually. Find the balance in the account after 4 years. Round the answer to the nearest dollar. A. \$234 B. \$216 C. \$225 D. \$208 Hint 12. Determine whether PQR has no solution, one solution, or two solutions. A. There is one solution because p > r sin p. B. There are two solutions because r > p > r sin P. C. There is one solution because p < r sin P. D. There is no solution because p = r sin P. Hint 13. Solve 6z > 39. A. {z | z > 234} B. C. D. {z | z < 234} Hint 14. Solve 2.4x + 1.7y = 8.2, 3.8x – 0.8y = 5.3. Round to the nearest hundredth. A. (–1.86, –2.20) B. (–1.86, 2.20) C. (1.86, –2.20) D. (1.86, 2.20) Hint 15. Suppose a matrix equation of a system of equations does not have a unique solution. What cannot be true? A. B. ad – bc ? 0 C. D. is undefined Hint 16. Determine whether the expression 5x3y3 – x2y2 is a polynomial. A. No, because there are two variables. B. Yes. C. Cannot be determined from given information. D. No, because there are two terms. Hint 17. Find the inverse of f(x) = x – 3. A. g (x) = 4x + 3 B. g(x) = 4x + 12 C. g(x) = x + 3 D. g(x) = x + 12 Hint 18. Write an equation for the ellipse whose endpoints of its major axis are at (2, -7) and (2, 3), and that of its minor axis are at (-1, -2) and (5, -2). A. B. C. D. Hint 19. Which of the following series is not infinite? A. B. C. D. Hint 20. If tan A = 0.75, what is cos A? A. B. 4 C. D. Hint