AnswersOC27 MATH COLL ALGEBRA-1200710-S1-YACKELLinear Functions

Function Operations Answers

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If and , what is the value of (f – g)(144)?

Question illustration
A
–84
B
–60
C
0
D
48
2
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If f(x) = 8 – 10x and g(x) = 5x + 4, what is the value of (fg)(–2)?

A
–196
B
–168
C
22
D
78
3

If f(x) = x2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0?

A
–4
B
–2
C
2
D
4
4

Which expression is equivalent to ?

Question illustration
A
f (5) times g (5)
Option A
B
f (5) + g (5)
Option B
C
5 f (5)
Option C
D
5 g (5)
Option D
5

Which expression is equivalent to (st)(6)?

A
s(t(6))
B
s(x) × t(6)
C
s(6) × t(6)
D
6 × s(x) × t(x)
6

Which expression is equivalent to (f + g)(4)?

A
f(4) + g(4)
B
f(x) + g(4)
C
f(4 + g(4))
D
4(f(x) + g(x))
7

If f(x) = 3 – 2x and , what is the value of ?

Question illustration
A
–169
B
–1
C
13
D
104
8

If r(x) = 3x – 1 and s(x) = 2x + 1, which expression is equivalent to ?

Question illustration
A
StartFraction 3 (6) minus 1 Over 2 (6) + 1 EndFraction
Option A
B
StartFraction (6) Over 2 (6) + 1 EndFraction
Option B
C
StartFraction 36 minus 1 Over 26 + 1 EndFraction
Option C
D
StartFraction (6) minus 1 Over (6) + 1 EndFraction
Option D
9

If f(x) = 16x – 30 and g(x) = 14x – 6, for which value of x does (f – g)(x) = 0?

A
–18
B
–12
C
12
D
18
10

If and d(x) = x + 3, what is the domain of (cd)(x)?

Question illustration
A
all real values of x
B
all real values of x except x = 2
C
all real values of x except x = –3
D
all real values of x except x = 2 and x = –3

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Function Operations Answers — OC27 MATH COLL…