40. Given the function f(x) = 8 (x - 10)2 , what is it's vertex? b. (-10, 0) c. (10, 0) d. (8, 10) a. (8, - 10) 41. Which of the following equation can solve using extracting square root? I. 5x2 - 4X = 10 II. 4x2 - 60 = 0 III. X2 = 36 a. I and II b. II and III c. I, II and III d. II and III 42. Blake says that the solutions of the equation x2 + 3x + 2 = 0 is 3 and 2. Is his answer correct? a. Yes, his answer is correct b. No, the solutions of the equation are 2 and 1 C. No, the solution of the equation are - 2 and - 1 d. Yes, I agree with Blake 43. Solve for the product of the roots of the equation 6x2 - 3x = - 30 . a. - 5 b. 5 C. 6 d. - 6 44. What is the equation of the given graph? a. y = x2 + 6x + 7 3+ b. y = x2 + 6x + 9 c. y = X2 - 6x + 7 2 d. y = x2 - 6x + 9 -2+ 45. Turn this equation ~ - = = 4x into quadratic equation. a. 0 = 12x2 + 19x c. 0 = 12x2 - 19x b. 0 = -12x2 + 19x d. 0 = 12x - 19x2 46. Evaluate: Find the value(s) of y in the equation (y - 7)2 = 3. a. 11, 3 b. -11, 3 c. -3, 11 d. -11, -3 47. The roots of the equation is - 4 and 7, what is the function of this roots? a. y = x2 - 3x + 28 C. y = X2 - 3x - 28 b. y = 2x2 + 3x + 28 d. y = 2x2 + 3x - 28 48. A rectangular field has a perimeter of 100 ft. What must be the representation of the width in terms of length of the rectangular field to have an area of at least 600 ft2 ? a. 50 - / b. /- 50 C. - /-50 d. /+ 50 49. What are the solutions of the inequality x2 + 4x - 5 1} b. (00, -5] [1, 00) d. {-5 > x 10 area of the rectangular garden? a. 3x2 - x - 14 = 0 c. 3x2 + x - 14 b. 3x2 - 13x - 14 = 0 d. 3x2 + 13x - 14 = 0 54. Which of the following method is applicable if the given equation is in the form x2 = c ? a. Completing the square c. Factoring b. Quadratic Formula d. Extracting square root 55. What is the function of these roots: - 10 and 8. a. y = x2 + 2x - 80 c. y = x2 - 2x - 80 b. y = 2x2 - 2x + 80 d. y = 2x2 - 2x - 80 56. Transform this function into standard form: y = 2(X - 5)2 + 4. a. y = 2x2 - 20x + 54 C. y = 2x2 - 20x + 50 b. y = -2x2 + 20x + 54 d. y = -2x2 + 20x + 50 57. Solve the inequality x2. > 2x + 15. Express your answer in the number line. a. C. i'sg b. d. -5 58. Given the function, f(x) = - 6(x + 6)2 - 13, what is the direction of the opening of the parabola? a. Upward b. downward c. to the right d. to the left 59. The sum of the two numbers is 15. And the product of the two numbers is 50. What is the larger number? a. - 5 b. 10 c. 15 d. 5 60. Given the function, f(x) = - 6(x + 6)2 - 13, what is the axis of symmetry? a. X = - 6 b. X = 6 C. X = 13 d. X = 13