MATHEMATICS-^ Name: __________________________________________ Period: _________________ Date: ___________________ Final Review DIRECTIONS: Read each question and choose the correct answer. Mark the space for the answer you have chosen on your answer sheet. Please show all your work. (2) 36. Simplify 2 x 4 7 x 3 3x 2 . Assume the denominator cannot 2 x 2 3x 2 equal zero. 31. Simplify the following expression. Put your answer in simplest form. t A. B. C. D. 2t 3t 3 4 7t 12 11t 12 13t 12 17t 12 32. A rectangle has a length of x inches and a width 2 inches less than the length. If the dimensions were doubled, what would be the area of the new rectangle in terms of x? A. 2x 4 B. 4x 8 C. D. A. B. C. D. 37. How many times does the graph of the quadratic function f x x 2 1 intersect the x-axis? A. B. C. D. A. 1 2 B. 1 C. 3 2 D. 2 3 2 1 0 38. Which relation below is a function? 4 x2 8x 4 x4 8x2 33. Brad is swimming 3 miles upstream. The trip takes 6 hours. He swims back downstream to his original starting point in 2 hours. How fast, in miles per hour, is the current traveling? x3 3x 2 x2 3 x 3x 2 x2 3 x 3x 2 x2 3 x 3x 2 x2 x y 0 1 A. 1 2 2 3 3 4 x y 0 1 B. 1 2 0 3 34. What is the range of the function y 3 x 2 for the domain 2 4 4 x 8? 10 x 22 12 x 22 10 x 20 12 x 20 x y 0 1 A. B. C. D. C. C. 1 7 1 7 D. 22 7 2 3 3 4 1 2 35. What are the roots of x x 3 ? 2 1 5 A. B. 1 1 x y 0 1 D. 1 2 2 3 2 4 39. The area of the trapezoid below can be found by the formula x4 x2 4 x4 x2 4 x4 x2 4 x4 x2 4 B. C. The area of this trapezoid is 16 square inches. If b1 h and b2 h 6 , what is the length of h in inches? D. 11 13 15 17 Q 1,2, 2,3, 3,4, 4,5, x, y w 2w w 2 3 B. C. D. w 6 5w 6 7w 6 11w 6 4,6 5,6 6,7 6,8 A. B. C. D. f x = x2+5x+6 46. Which graph describes the equation 8 4 2 -10 -5 41. Which of the following relations is a function? A. x6 C. D. y x2 5x 6 ? 6 -15 B. 45. Which ordered pair x, y could not be substituted in the relation below so that the relation is a function? 40. Simplify the following expression. Put your answer in simplest form. A. 2 cannot equal zero. A. A. B. C. D. x 2 . Assume that the denominator x 4 x2 44. Simplify 1 A hb1 b2 . 2 x 6y y6 y2 6x 5 10 15 5 10 15 5 10 15 5 10 15 -2 -4 f x = - x2+5x+6 -6 8 A. -8 6 -10 4 -12 2 -15 -10 -5 -2 42. How many more hours would it take a car traveling at an average rate of 30 miles per hour to cover a distance of 90 miles, than it would for a car traveling at a rate of 60 miles per hour? A. 1.5 B. 2.5 C. 3 D. 4 -4 f x = x2-5x +6 B. -6 8 -8 6 -10 4 2 -12 -15 -10 -5 -2 43. What is 6 x x 1 in factored form? A. 3x 1 2 x 1 2 B. C. D. 3x 12x 1 3x 12x 1 3x 12x 1 -4 f x = - x2-5x+6 -6 C. 8 -8 6 -10 4 -12 2 -15 -10 -5 -2 -4 D. -6 -8 -10 -12 47. The following ordered pairs, a function? x, y define the relation Q. Is Q Q 1,2, 2,3, 3,4, 4,5 A. B. C. D. Yes, because there is exactly one y value for every x value. Yes, because there is exactly one x value for every y value. No, because there is more than one x value for some y values. No, because there is more than one y value for every x value. 48. Simplify A. B. C. D. 4x 2 13x 3 4 x 1 , where x x3 x 3 x 3 , with a 1 remainder. x 3 , with a 1 remainder. 1 4 53. Simplify A. B. C. D. 2x 2 1 3x 3 2 x 1 , where x . 2 x2 x2 x 2 , with 1 remainder. x 2 , with 1 remainder. 54. Which of the following shows written in factored form? A. 2x 1 b 1 B. C. D. 2x 1b 1 2x 1 2x 1b 2x 1b 1 2x 1b 2 49. What is the domain of the function x5 2x 7 all real numbers except 5 . 7 all real numbers except . 2 7 all real numbers except . 2 f x A. B. C. D. 55. The graph of which of the following equations has x-intercepts of 5 and 5 ? y 5 x A. y x 2 2 , for all x 0 , y is a function of x because A. x cannot be negative. B. the graph of the equation is a line. C. each value of y has a unique value of x. D. each value of y has a unique value of y. 51. Which of the following shows written in factored form? A. x2 y2 C. D. x 2 y 1 x 2 x 2 y 2 x 2 y x 2 y 1 52. An equation in the form ax bx c 0 is solved by the quadratic formula. The solution to the equation is shown below. 2 x 2 24 2 What are the values of a, b, and c in the quadratic equation? a 1, b 2, c 7 A. B. C. D. y 5 x C. y 25 x 2 D. x 25 y 2 all real numbers except 3. 50. In the relation defined by the equation B. B. a 1, b 2, c 7 a 1, b 2, c 7 a 1, b 2, c 7 56. What number should be added to both sides of the equation below if you were going to solve the equation by completing the square? 1 x2 x 2 3 1 A. 36 1 B. 6 1 C. 3 1 D. 2 57. Simplify: 2 x 4 5x3 2 x 2 . Assume the denominator 2 x 2 3x 2 cannot equal zero. A. B. C. D. x3 2 x 2 x2 3 x 2x2 x2 3 x 2x2 x2 3 x 2x2 x2 58. How many times does the graph of the quadratic function y x 2 4 x 4 intersect the x-axis? A. B. C. D. 3 2 1 0 59. If the sum of x and y is 50 and x is 10 more than two times y, which of the following systems of equations could be used to solve for x and y? A. B. C. D. x y 50 x 2 y 10 x y 50 x 2 y 10 x y 50 x 2 y 10 x y 50 x 2 y 10 60. The area of the trapezoid below can be found by the formula A 1 hb1 b2 . 2 The area of this trapezoid is 20 square inches. If b2 h 6 , what is the length of h in inches? A. B. C. D. 11 14 17 20 b1 h and 61. On the grid provided, sketch the solution set to the system of inequalities shown below. 3x 5 y 15 x y 6 11 10 9 8 7 6 5 4 3 2 1 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 Does the solution set contain the point 1,2 ? Verify your work algebraically. 6 7 8 9 10 11 How would the solution set from the system of inequalities above change if the system were as follows? 3x 5 y 15 x y 6 Explain your answer or, if you choose to draw a graph, use the grid provided below. 11 10 9 8 7 6 5 4 3 2 1 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 1 2 3 4 5 6 7 8 9 10 11