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Math 12 Pre-Calculus LG 6 Unit 2 Practice Test #3



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

 1. 

Compared to the graph of the base function mc001-1.jpg, the graph of the function mc001-2.jpg is translated
A
8 units to the left
C
8 units to the right
B
8 units up
D
8 units down
 

 2. 

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

 3. 

Given the function mc003-1.jpg with a domain of mc003-2.jpg and a range of mc003-3.jpg, which of the following best describes the vertical and horizontal translations with respect to the graph of mc003-4.jpg?
A
5 units to the left and 8 units up
C
8 units to the left and 5 units up
B
8 units to the left and 5 units down
D
5 units to the left and 8 units down
 

 4. 

Given the graph of f(x) shown below, what are the coordinates of point A¢ if the equation of the transformed function is mc004-1.jpg?
mc004-2.jpg
A
mc004-3.jpg
C
mc004-5.jpg
B
mc004-4.jpg
D
mc004-6.jpg
 

 5. 

What is the equation of the transformed function, g(x), after the transformations are applied to the graph of the base function mc005-1.jpg, shown in blue, to obtain the graph of g(x), shown in red?
mc005-2.jpg
A
mc005-3.jpg
C
mc005-5.jpg
B
mc005-4.jpg
D
mc005-6.jpg
 

 6. 

Which radical equation can be solved using the graph shown below?mc006-1.jpg
A
mc006-2.jpg
C
mc006-4.jpg
B
mc006-3.jpg
D
mc006-5.jpg
 

 7. 

Which equation of a radical function would have the following domain and range?
mc007-1.jpg; mc007-2.jpg
A
mc007-3.jpg
C
mc007-5.jpg
B
mc007-4.jpg
D
mc007-6.jpg
 

 8. 

Which graph represents an even-degree polynomial function with a y-intercept of 9?
A
mc008-1.jpg
C
mc008-3.jpg
B
mc008-2.jpg
D
mc008-4.jpg
 

 9. 

If mc009-1.jpg is divided by mc009-2.jpg, then the restriction on x is
A
mc009-3.jpg mc009-4.jpg
C
mc009-7.jpg mc009-8.jpg
B
mc009-5.jpg mc009-6.jpg
D
mc009-9.jpg mc009-10.jpg
 

 10. 

What is the remainder when mc010-1.jpg is divided by mc010-2.jpg?
A
1070
C
962
B
–1070
D
–962
 

 11. 

If mc011-1.jpg is divided by mc011-2.jpg, what is the remainder?
A
P(x – 4)
C
P(x + 4)
B
P(4)
D
P(–4)
 

 12. 

A factor of mc012-1.jpg is     
A
mc012-2.jpg
C
mc012-3.jpg
B
x – 5
D
x – 8
 

 13. 

Determine the value of k so that mc013-1.jpg is a factor of mc013-2.jpg.
A
k = –1
C
k = 14
B
k = –14
D
k = 1
 

 14. 

The graph that corresponds to the function mc014-1.jpg is
A
mc014-2.jpg
C
mc014-4.jpg
B
mc014-3.jpg
D
mc014-5.jpg
 

 15. 

Given the function mc015-1.jpg, what are the parameters of the transformed function
y = mc015-2.jpgmc015-3.jpg and what is the effect of each parameter on the graph of the original function?
A
a = mc015-4.jpg, vertical stretch about the x-axis by a factor of mc015-5.jpg
h = –8, horizontal translation 8 units right
k = 2, vertical translation 2 units down
B
a = mc015-6.jpg, vertical stretch about the x-axis by a factor of mc015-7.jpg
h = 2, horizontal translation 2 units left
k = –8, vertical translation 8 units right
C
a = mc015-8.jpg, vertical stretch about the x-axis by a factor of mc015-9.jpg
h = 2, horizontal translation 2 units right
k = –8, vertical translation 8 units down
D
a = mc015-10.jpg, vertical stretch about the x-axis by a factor of mc015-11.jpg
h = 2, horizontal translation 2 units right
k = –8, vertical translation 8 units down
 

Short Answer
 

 1. 

Determine the domain and range of each function.
a) sa001-1.jpg
b) sa001-2.jpg
c) sa001-3.jpg
 

 2. 

Jim states that the equations sa002-1.jpg and sa002-2.jpg have the same solution. Is he correct? Justify your reasoning.
 

 3. 

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

 4. 

Factor fully.
a) x2(x – 2)(x + 2) + 3x + 6
b) 16x4 – (x + 1)2
 

 5. 

Solve by graphing using technology. Round answers to one decimal place.
a) x3 – 7 > 0
b) sa005-1.jpg
 

Problem
 

 1. 

The manufacturer of a new Global Positioning Satellite (GPS) system wants to predict the consumer interest in its new device. The company uses the function pr001-1.jpg to model the number, I, in thousands, of pre-orders for the GPS as a function of the number, w, of weeks before the GPS release date.
a) What are the domain and range and what do they mean in this situation?
b) Identify the transformations represented by the function compared to pr001-2.jpg.
c) Graph the function and explain what the shape of the graph indicates about the situation.
d) Determine the number of pre-orders the manufacturer can expect to have 10 weeks before the release date.
 

 2. 

Show that x + a is a factor of the polynomial P(x) = (x + a)4 + (x + c)4 – (ac)4.
 

 3. 

Maria is designing a series of stationery trays for holding paper and envelopes. Each tray starts as a rectangular sheet of metal from which identical squares are cut from the four corners. The resulting rectangular flaps are then folded up and welded to produce an open-topped rectangular tray. What size square should Maria cut from a rectangular sheet of metal 15 cm by 25 cm in order to produce a tray with a volume of 476 cm3? Round to the nearest hundredth of a centimetre, if necesary.
 

 4. 

Create a cubic polynomial inequality for which x = 3 or pr004-1.jpg is the solution. Explain your reasoning.
 

 5. 

Determine an equation for the polynomial function represented by the table of values.

x
y
–3
–30
–2
–10
–1
–2
0
0
1
2
2
10
3
30
 



 
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