Answers26MATH_Recovery_Alg1B22Multiplying Polynomials and Simplifying Expressions

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 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
3

The graphs of f(x) and g(x) are shown below. For what interval is the value of (f – g)(x) negative?

Question illustration
A
(negative infinity, negative 1)
Option A
B
(negative infinity, 2)
Option B
C
(0, 3)
Option C
D
(2, infinity)
Option D
4

If p(x) = x2 – 1 and , which expression is equivalent to (p – q)(x)?

Question illustration
A
5(x – 1) – x2 – 1
B
(5x – 1) – (x2 – 1)
C
(x2 – 1) – 5(x – 1)
D
(x2 – 1) – 5x – 1
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

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
7

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
8

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
9

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
10

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

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