Pre-Calculus 12 Practice Exam 1 MULTIPLE-CHOICE (Calculator permitted ) 1. Determine the smallest zero for y 4 sin 3 2 in the interval 2 3 a. 0.38 b. 1.22 c. 6.66 d. 7.50 2. In high school, a shot put is thrown out of a circle with a radius of 3.5 feet. A curved wooden “stopboard” is placed in an arc around part of this circle. The central angle is 65.5°. Determine the length of the curved “stopboard.” a. b. c. d. 7. A restaurant offers a selection of 4 different sandwiches, 3 different soups and 4 different flavours of juice. In how many different ways can a person select one item from each category? a. 11 b. 18 c. 48 d. 54 8. Determine the 4th term in the expansion of y 4x 2 8 a. 7168 x 5 y 3 c. 16 x 4 y 4 b. 128 x 5 y 3 d. 1120 x 4 y 4 9. A family of 6 (2 parents and 4 children) sit in a row at a theatre. A parent must sit at either end with the 4 children between them. In how many ways can the family be seated? 3.5 ft 4.0 ft 4.5 ft 5.0 ft a. 24 b. 48 c. 120 d. 720 10. From a standard deck of 52 cards, how many 5-card hands can be formed containing at least 4 clubs? 3. On Oct. 2, 2010, the tide at New Westminster reached a maximum height of 10.8 feet at midnight. At 9 am the tide reached the next minimum height of 5.8 feet. Assuming the relationship is sinusoidal, what was the height of the tide at 7 am? a. 6.1 ft 4. Solve 7 2 a. -0.64 b. 6.4 ft x 1 c. 8.7 ft d. 9.9 ft . b. 1.36 15.5 b. 15.6 b. 27 885 c. 29 172 d. 34 320 11. A hockey team has played 10 games and has a record of 5 wins, 3 losses and 2 ties. In how many ways could this have happened if after the first 4 games the team’s record was 3 wins and a loss? a. 90 b. 94 c. 360 d. 630 12. When the polynomial P(x ) is divided by x 3, the c. 1.81 d. 3.81 5. The population in a particular community is increasing at an annual rate of 6.5%. Assume this trend will continue. In how many years will the present population of 12 000 grow to 32 000? a. a. 20 592 c. 15.8 remainder is 2. Which point must be on the graph corresponding to the function y P(x ) ? a. 3,2 b. 3,0 c. 3,2 d. 3,2 13. Determine the range of the rational function graphed below. d. 16.1 6. In a study which compared the pH of urine and tears, the following data was collected. On average, how many times more alkaline are tears than urine? a. 1.3 b. 1.5 c. 15.0 d. 31.6 a. b. c. d. all reals ( ,0],[8, ) ( ,2], (2, ) ( ,1), ( 1,0],[8, ) 14. The graph y f (x) is stretched horizontally by a 1 factor of . Determine the equation of the 4 transformed graph. a. b. 1 f ( x) 4 y 4 f ( x) 1 c. y f ( x ) 4 d. y f (4 x ) y 20. A point with an x value of 2 lies on the circle with equation x 2 y 2 5 . This point also lies on the terminal arm of in standard position. Determine the value of sec . a. MULTIPLE-CHOICE (Calculator NOT permitted) 5 2 b. 5 2 2 c. 2 5 d. 5 21. The graph of y 2 sin b x c 1 is shown below. Determine a value of c . 15. The students at a graduation dinner are separated into groups to be seated at 10 different tables. The order in which these 10 groups will approach the buffet is to be determined randomly. In how many ways can this order be determined? a. 1010 b. 10 C10 c. d. 10 10 10 P10 16. Consider the graph of y 3cos x 2 10 4. a. Which statement is false? a. b. c. d. 17. Solve cos x a. 5 , 6 6 I II III IV b. 6 , 6 c. 2 3 , 3 d. 5 b. 5 n, n Z 6 2 n, n Z 3 a. cos x 0 b. cos x 1 5 2n, n Z 6 2 d. 2n, n Z 3 c. a. a. 2 3 b. 2 3 2 7 d. 4 c. sin x 0, cos x 1 d. cos x 0, cos x 1 3 b. , 4 4 3 , 4 4 c. 3 7 , 4 4 d. 3 5 , 4 4 csc sin sec cos b. cot 3 cot 2 c. tan 2 d. tan 3 25. Solve 2 3 x 1 8 2 x 1 19. Determine the exact value of tan 75 5 3 c. 4 3 3 d. 3 24. Simplify a. a. c. 22. Determine all restrictions for the expression tan x cos x 1 , 3 3 18. Determine an expression for all angles coterminal with a standard position angle measuring 120°. Express your answer in radians. a. b. 2 23. Solve sin x cos x , x 3 , 0 x 2 2 11 2 2 x 4 2 3 b. x 1 c. x d. x 3 3 4 26. Express log a. b. x2 10 y 3 in terms of log x or log y 2 log x 1 3log y c. 2 log x 10 3log y 2 log x 1 3log y d. 2 log x 10 3log y 31. The graph of y f (x) is shown below. 27. Evaluate log 3 27 a. 2 9 2 3 b. c. 3 2 d. 9 2 Which graph represents the graph of y f 2x 3 4 ? 28. Bart and Arnie presented separate solutions to the statement “Write log 2 x log 4 y as a single log” a. c. b. d. Which statement is true? a. Only Bart is correct c. They are both wrong b. Only Arnie is correct d. They are both correct 29. Which statement must be true for f ( x ) log 1 x when x 2 x1 ? 2 a. b. f ( x1 ) f ( x 2 ) f ( x 2 ) f ( x1 ) c. f ( x1 ) 0, f ( x 2 ) 0 d. f ( x 2 ) 0, f ( x1 ) 0 30. For which graph is the relation and its inverse both functions? a. c. 32. Consider the following transformations on the graph of y f (x) Which transformations will have no effect on the zeros of the original graph of y f (x) ? a. I and II only c. II and IV only b. II and III only d. III and IV only b. d. 33. The graph of y f (x) as shown below is transformed to x f ( y ) . Determine all invariant points. a. b. c. d. 0,3 1,1 2,1 1,1 and 2,1 34. The point P 4,6 lies on the graph of y f (x) . Which point must lie on the graph 1 1 y f x 2 ? 2 2 a. 7,3 b. 4,3 c. 1,3 39. Given f ( x ) x 2 and g ( x ) x 2 3x 1 , determine the value of f g 3 . a. 16 d. 2,3 c. b. d. 37. Which three expressions are factors of y 9 x 3 36 x 2 4 x 16 ? a. b. c. d. I, II, III only I, II, IV only I, III, IV only II, III, IV only a. c. b. d. 41. As a furniture salesperson, Chacci gets a 3% commission on all his weekly sales above $5000. Which row in the table shows the composite function that will determine his commission if x represents his weekly sales? a. b. 38. When x 3 2kx 2 3k 2 x 15 is divided by x 2 , the remainder is 1. Determine all values of k . a. k 4 b. k d. 39 III only IV only I and IV only II and III only 36. Which sketch best represents the graph of y ax3 bx2 cx 24 if a 0 ? a. c. 19 40. The graphs of y f (x) and y g (x ) are shown below. Which graph represents y f ( x ) g ( x ) ? 35. Which of the following functions are polynomial functions? a. b. c. d. b. 17 17 2 2 c. k , 2 d. k ,2 8 3 3 c. d. 42. Consider the graphs of the functions f ( x ) x 2 and g ( x ) f ( x ) . Which row describes the domain and range of g (x ) ? 2. Prove algebraically. (4 marks) 2 tan 2 1 tan cos 1 sin 2 1 tan 3. The graph of y f (x) is shown below. a. b. c. d. 43. Given the graph of y f (x) as shown, determine the graph of y f (x ) Sketch the graph of y 2 f ( x) 3 4. a. c. b. d. (4 marks) Use the graphs of y f (x ) and y g (x ) shown to sketch the graph of y f ( x ) g ( x ) . Label enough points to get an accurate representation of the graph. (4 marks) WRITTEN-RESPONSE QUESTIONS (Calculator NOT permitted) 44. Determine the range of the function y 3x 9 2 1. Solve algebraically: log 15 3 x log 15 1 x 1 . Justify the validity of each solution (4 marks) 2. a. y 0 b. y 2 c. y 3 d. y 9 WRITTEN-RESPONSE QUESTIONS (Calculator permitted) 1. Solve algebraically, over the set of real numbers, giving exact values where possible. (4 marks) 3 sin 2 5 cos 1 Consider the graphs of f ( x ) g ( x) x2 x 6 x2 9 and x x 9 2 Use your knowledge of rational functions to outline the similarities and differences between these two graphs. You will be evaluated on the concepts expressed, the organization and accuracy of your work, and your use of language. (4 marks) Answers 1. d 2. b 3. b 4. c 5. b 6. d 7. c 8. a 9. b 10. c 11. c 12. c 13. b 14. d 15. c 16. b 17. b 18. d 19. a 20. a 21. d 22. d MULTIPLE-CHOICE 23. a 24. b 25. a 26. a 27. c 28. d 29. a 30. a 31. d 32. c 33. b 34. b 35. c 36. a 37. c 38. c 39. c 40. a 41. d 42. d 43. a 44. b 3. 4. WRITTEN-RESPONSE (Calculator permitted) 1. WRITTEN-RESPONSE (No calculators) 1. 2. 2.