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Math 12 Pre-Calc Practice Final Exam #4



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

When b > 0, the function mc001-1.jpg has what relationship to the base function mc001-2.jpg?
A
f(x) is stretched vertically by a factor of |b| and reflected in the x-axis
B
f(x) is stretched vertically by a factor of |b|
C
f(x) is stretched horizontally by a factor of 1/|b| and reflected in the y-axis
D
f(x) is stretched horizontally by a factor of 1/|b|
 

 2. 

Compared to the graph of the base function mc002-1.jpg, the graph of the function mc002-2.jpg is translated
A
4 units to the right and 8 units up
C
8 units to the left and 4 units down
B
4 units to the left and 8 units down
D
8 units to the right and 4 units up
 

 3. 

Given the graph of f(x) shown below, what are the coordinates of point A¢ if the equation of the transformed function is mc003-1.jpg?
mc003-2.jpg
A
mc003-3.jpg
C
mc003-5.jpg
B
mc003-4.jpg
D
mc003-6.jpg
 

 4. 

Which graph represents an even-degree polynomial function with a y-intercept of 9?
A
mc004-1.jpg
C
mc004-3.jpg
B
mc004-2.jpg
D
mc004-4.jpg
 

 5. 

When mc005-1.jpg is divided by mc005-2.jpg, the remainder is
A
x2 mc005-3.jpgx mc005-4.jpg
C
mc005-5.jpg
B
P(–2) = –34
D
mc005-6.jpg
 

 6. 

The fully factored form of mc006-1.jpg is
A
mc006-2.jpg
C
mc006-4.jpg
B
mc006-3.jpg
D
mc006-5.jpg
 

 7. 

The coordinates of the point that lies at the intersection of the terminal arm and the unit circle at an angle of 110° are
A
(0.94, –0.34)
C
(–0.34, 0.94)
B
(–0.34, –2.75)
D
(–2.75, 0.94)
 

 8. 

If the angle q is –5000° in standard position, it can be described as having made
A
mc008-1.jpg rotations
C
mc008-3.jpg rotations
B
mc008-2.jpg rotations
D
mc008-4.jpg rotations
 

 9. 

If the angle q is 1600° in standard position, in which quadrant does it terminate?
A
quadrant III
C
quadrant II
B
quadrant IV
D
quadrant I
 

 10. 

Determine the point in quadrant II where the line represented by mc010-1.jpg intersects the unit circle.
A
(0.95, –0.32)
C
(–0.35, 0.94)
B
(–0.32, 0.95)
D
(–0.32, 0.94)
 

 11. 

Giai got an answer of 3.86 when she was calculating the value of a trigonometric function. Assuming Giai did her calculation correctly, which of the following was she calculating?
A
tan mc011-1.jpgp
C
csc mc011-3.jpgp
B
sec mc011-2.jpgp
D
cot mc011-4.jpgp
 

 12. 

Which graph represents the function y = mc012-1.jpg sin (mc012-2.jpgq), where q is in radians?
A
mc012-3.jpg
C
mc012-5.jpg
B
mc012-4.jpg
D
mc012-6.jpg
 

 13. 

Which graph represents the function y = mc013-1.jpgcos(mc013-2.jpgx), where x is in degrees?
A
mc013-3.jpg
C
mc013-5.jpg
B
mc013-4.jpg
D
mc013-6.jpg
 

 14. 

Given the trigonometric function mc014-1.jpg, find the value of the y-coordinate of the point with x-coordinate –1200°.
A
mc014-2.jpg
C
mc014-4.jpg
B
mc014-3.jpg
D
mc014-5.jpg
 

 15. 

What are the solutions for mc015-1.jpgmc015-2.jpg = 0 in the interval mc015-3.jpg?
A
mc015-4.jpg mc015-5.jpg mc015-6.jpg mc015-7.jpg
C
x = 90° and 270° mc015-9.jpg
B
x = 30° and 210° mc015-8.jpg
D
x = 60° and 240° and 45°
 

 16. 

What are the solutions for mc016-1.jpgmc016-2.jpg = 0 in the interval mc016-3.jpg?
A
x = 90° and 270° mc016-4.jpg
C
x = 60° and 240° and 45°
B
mc016-5.jpg mc016-6.jpg mc016-7.jpg mc016-8.jpg
D
x = 30° and 210° mc016-9.jpg
 

 17. 

What is the general solution, in degress, to the equation mc017-1.jpg?
A
mc017-2.jpg. where mc017-3.jpg
C
mc017-6.jpg, where mc017-7.jpg
B
mc017-4.jpg, where mc017-5.jpg
D
mc017-8.jpg, where mc017-9.jpg
 

 18. 

A rumour is being spread in a community that the mayor is going to retire before the next election. Initially, 6 people were told the rumour and each of these people told 6 others the following day. Each of the 6 people told by the initial people told 6 others the day after they were told. If this process keeps up, how many people will be told the rumour on the eighth day?
A
1 679 616 people
C
10 077 696 people
B
279 936 people
D
48 people
 

 19. 

Solve for x.
mc019-1.jpg
A
9
C
8
B
7
D
11
 

 20. 

Another way of writing mc020-1.jpg is
A
mc020-2.jpg
C
mc020-4.jpg
B
mc020-3.jpg
D
mc020-5.jpg
 

 21. 

Another way of writing mc021-1.jpg is
A
mc021-2.jpg
C
mc021-4.jpg
B
mc021-3.jpg
D
mc021-5.jpg
 

 22. 

Compared to the graph of the base function mc022-1.jpg, the graph of the function mc022-2.jpg is translated
A
4 units to the left
C
4 units up
B
4 units down
D
4 units to the right
 

 23. 

Solve mc023-1.jpg. Round your answer to two decimal places.
A
3.06
C
2.95
B
7.26
D
–1.40
 

 24. 

A graduate student determines that the relationship between the length, s, in metres, of the skull and the body mass, m, in kilograms, of a particular species can be expressed using the equation mc024-1.jpg. Determine the body mass of an animal with a skull size of 0.56 m. Round your answer to the nearest kilogram.
A
547 kg
C
343 kg
B
376 kg
D
313 kg
 

 25. 

What is the equation for the vertical asymptote of the graph of the function shown?
mc025-1.jpg
A
mc025-2.jpg
C
mc025-4.jpg
B
mc025-3.jpg
D
mc025-5.jpg
 

 26. 

Which rational function has the following characteristics?
• a vertical asymptote with equation mc026-1.jpg
• a horizontal asymptote with equation mc026-2.jpg
• a point of discontinuity at mc026-3.jpg
A
mc026-4.jpg
C
mc026-6.jpg
B
mc026-5.jpg
D
mc026-7.jpg
 

 27. 

Solve the equation mc027-1.jpg.
A
x = mc027-2.jpg
C
x = mc027-3.jpg
B
x = 3
D
x = 4
 

 28. 

What are the x-intercepts of the graph of mc028-1.jpg?
A
–7, –5
C
7, 5
B
2, –9
D
–2, 9
 
 
For the following question(s), assume that x is in radians, if applicable.
 

 29. 

Given the functions mc029-1.jpg and mc029-2.jpg, what is the value of mc029-3.jpg?
A
mc029-4.jpg
C
mc029-6.jpg
B
mc029-5.jpg
D
mc029-7.jpg
 

 30. 

Given the functions mc030-1.jpg and mc030-2.jpg, what is the simplified form of mc030-3.jpg?
A
mc030-4.jpg
C
mc030-6.jpg
B
mc030-5.jpg
D
mc030-7.jpg
 

 31. 

If mc031-1.jpg and mc031-2.jpg, what are the restrictions on the domain for the combined function mc031-3.jpg?
A
mc031-4.jpg
C
mc031-6.jpg
B
mc031-5.jpg
D
mc031-7.jpg mc031-8.jpg
 

 32. 

If mc032-1.jpg and mc032-2.jpg, what is the simplified combined function mc032-3.jpg?
A
mc032-4.jpg
C
mc032-6.jpg
B
mc032-5.jpg
D
mc032-7.jpg
 

 33. 

Evaluate the expression mc033-1.jpg.
A
726 485 760
C
2002
B
240 240
D
126
 

 34. 

For a mock United Nations, 6 boys and 7 girls are to be chosen. If there are 12 boys and 9 girls to choose from, how many groups are possible?
A
846 720
C
960
B
33 264
D
120 708 403 200
 

 35. 

Which of the following has 30 terms in its binomial expansion?
A
mc035-1.jpg
C
mc035-3.jpg
B
mc035-2.jpg
D
mc035-4.jpg
 

Short Answer
 

 1. 

For each of the following, describe the combination of transformations that must be applied to the graph of sa001-1.jpg (shown in blue) to obtain the graph of g(x) (shown in red).
a) sa001-2.jpg
b) sa001-3.jpg
c) sa001-4.jpg
 

 2. 

Factor fully.
a) x3 + 6x2 + 11x + 6
b) 4x3 – 11x2 – 3x
c) x4 – 81
 

 3. 

Angles A and B are located in the first quadrant. If sa003-1.jpg  and sa003-2.jpg, determine the exact value of sec A + sec B.
 

 4. 

If sa004-1.jpg and sa004-2.jpg, determine the values of m and n.
 

 5. 

Consider the function sa005-1.jpg.
a) Determine the key features of the function:
      i) domain and range
      ii) intercepts
      iii) equations of any asymptotes
b) Sketch the graph of the function.
sa005-2.jpg
 

Problem
 

 1. 

Two groups of students are conducting a lab to determine the relationship between the period, p, in seconds, of a pendulum and the length, l, in metres, of the string. The curves of best fit from the experiment are shown on the graph.
pr001-1.jpg
a) When asked the type of function that could be used to model their findings, both groups argue that a radical function can be used. Do you agree with each group?
b) How do these graphs differ from the graph of pr001-2.jpg?
c) Write a function to approximate the graph for each group.
d) What may have caused the differences in the data between the two groups? Justify your answer in terms of transformations.
 

 2. 

Sketch the graph of pr002-1.jpg for pr002-2.jpg.
 

 3. 

Prove the identity pr003-1.jpg.
 

 4. 

The time, t, in hours, that it takes Alistair to jog 5 km is inversely proportional to his average speed, v, in kilometres per hour.
a) Write a function to represent the time as a function of the speed.
b) Sketch the graph of this function.
c) If Alistair jogs at 4.5 km/h, how long does it take him to complete a 5-km run, to the nearest minute?
 

 5. 

The population, P, of a small town is modelled by the function pr005-1.jpg, where t is time, in years, since the start of 1990.
a) Is the population increasing or decreasing? Justify your answer.
b) The town will need its own transit system if the population exceeds 50 000. Will the town’s population ever exceed 50 000? Explain.
 



 
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