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Math 11 Pre-Calc LG 4 Practice Unit Test #3



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

 1. 

Which of the following numbers occurs in the sequence 28, 36, 44, 52, 60, . . .?
A
116
C
94
B
83
D
105
 

 2. 

In the formula for the general term of an arithmetic sequence tn = 19 + (n – 1) ´ (–3.25), the common difference is
A
–3.25
C
–61.75
B
19
D
22.25
 

 3. 

What is the 9th term of the sequence –3, 7, 17, 27, 37, …?
A
97
C
–83
B
77
D
10
 

 4. 

The sum of an arithmetic series where mc004-1.jpg, mc004-2.jpg, and n = 29 is
A
mc004-3.jpg
C
mc004-5.jpg
B
mc004-4.jpg
D
mc004-6.jpg
 

 5. 

On the first day of the month, Michael places 2¢ in a jar. The next day, he places 7¢ in the jar. The third day, he places 12¢ in the jar, and so on for 48 days. What amount will be in the jar at the end of this period of time?
A
$58.08
C
$57.36
B
$56.88
D
$58.56
 

 6. 

The population of a community was 82 000 at the beginning of 2000. Assuming a rate of growth of 1.6% per year since 2000, what will the population be at the beginning of 2031?
A
132 016
C
136 274
B
2 582 672
D
134 128
 

 7. 

The first three terms of the sequence given by mc007-1.jpg are
A
mc007-2.jpg, mc007-3.jpg, mc007-4.jpg
C
5, 25, 125
B
5, mc007-5.jpg, mc007-6.jpg
D
mc007-7.jpg, mc007-8.jpg, mc007-9.jpg
 

 8. 

Determine the sum of the infinite geometric series with t1 = 3 and r = mc008-1.jpg.
A
mc008-2.jpg
C
mc008-4.jpg
B
mc008-3.jpg
D
mc008-5.jpg
 

 9. 

Which of the following best describes the series –10 + (mc009-1.jpg) + (mc009-2.jpg) + (mc009-3.jpg) + mc009-4.jpg?
A
The series is divergent and has a sum of mc009-5.jpg.
B
The series is convergent and has a sum of mc009-6.jpg.
C
The series is divergent and has no sum.
D
The series is convergent and has no sum.
 

 10. 

The first three terms of the sequence defined by mc010-1.jpg are
A
0.5, 0.8, 1.1
C
0.2, –0.1, –0.4
B
–0.3, 0.2, 0.7
D
–0.3, –0.8, –1.3
 

 11. 

What is the reference angle for 70° in standard position?
A
200°
C
290°
B
70°
D
140°
 

 12. 

What are the three other angles in standard position that have a reference angle of 87°?
A
93°, 267°, 273°
C
177°, 267°, 357°
B
174°, 261°, 348°
D
132°, 177°, 267°
 

 13. 

The coordinates of a point P on the terminal arm of an angle are shown. What are the exact trigonometric ratios for mc013-1.jpg, mc013-2.jpg, and mc013-3.jpg?
mc013-4.jpg
A
mc013-5.jpg
B
mc013-6.jpg
C
mc013-7.jpg
D
mc013-8.jpg
 

 14. 

Solve to the nearest tenth of a unit for the unknown side in the ratio
mc014-1.jpg.
A
42
C
14.8
B
25.7
D
29.7
 

 15. 

Determine, to the nearest tenth of a centimetre, the two possible lengths of a.
mc015-1.jpg
A
141.5 cm and 85.3 cm
C
50.5 cm and 30.5 cm
B
141.5 cm and 30.5 cm
D
85.3 cm and 50.5 cm
 

 16. 

Which of the following triangles cannot be solved using the sine law?

Diagrams not drawn to scale.
A
mc016-1.jpg
C
mc016-3.jpg
B
mc016-2.jpg
D
mc016-4.jpg
 

 17. 

If mc017-1.jpg, c = 10.5 cm, and b = 15.9 cm, and DABC is acute, what is the measure of mc017-2.jpg, to the nearest tenth of a degree?
mc017-3.jpg
A
144.4°
C
35.6°
B
161.9°
D
18.1°
 

 18. 

Which strategy would be best to solve for x in the triangle shown?
mc018-1.jpg
A
cosine law
C
primary trigonometric ratios
B
sine law
D
none of the above
 

 19. 

Determine the measure of x, to the nearest tenth of a degree.
mc019-1.jpg
A
36.4°
C
72.7°
B
126.3°
D
17.3°
 

 20. 

While flying, a helicopter pilot spots a water tower that is 5.4 km to the north. At the same time, he sees a monument that is 6.9 km  to the south. The tower and the monument are separated by a distance of 8.2 km along the flat ground. What is the angle made by the water tower, helicopter, and monument?

mc020-1.jpg
A
57°
C
B
41°
D
83°
 

Problem
 

 1. 

In a lottery, the first ticket drawn wins a prize of $25. Each ticket after that receives a prize that is twice the value of the preceding prize.
a) Write a function to model the total amount of prize money given away.
b) How many prizes are given out if the total amount of prize money is approximately $2 million?
 

 2. 

One side of a square is 12 cm. The midpoints of its sides are joined to form an inscribed square, and this process is continued as shown.
pr002-1.jpg

What is the sum of the perimeters of the squares if this process is continued without end? Give an exact answer as well as an approximation.
 

 3. 

Sarah and Simone are walking in a walk-a-thon down a straight street that leads to the finish line. At the same time, they both notice a tethered hot-air balloon directly over the finish line. Sarah sees that the angle from the ground to the balloon as 30°, and Simone (who is 0.25 km closer to the finish line than Sarah) sees the angle from the ground to the balloon as 45°.
a) Draw a diagram to represent this situation.
b) Let x represent the distance that Simone is from the finish line, and write an expression for the distance from Sarah to the finish line.
c) Write a trigonometric ratio for each girl’s position that involves the height, h, of the balloon, the distance each girl is away from the finish line, and the angle from the girl to the balloon.
d) Rearrange each equation from part c) to isolate h.
e) Set the two expressions for h equal to each other and solve for x, to the nearest hundredth of a kilometre.
f) Determine the height of the balloon, to the nearest hundredth of a kilometre.
 

 4. 

A clock has two hands that are 12 cm and 15 cm long. What is the distance, to the nearest tenth of a centimetre, between the tips of the hands at 2 p.m.?
 

 5. 

A racing bicycle has spokes on each wheel that are 35 cm long. Each spoke forms a 30° angle with the adjacent spoke. What is the distance between the points where the spokes attach to the wheel, rounded to the nearest centimetre?
 



 
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