AnswersCUSD Math 01 A 5.0Evaluating Functions

Evaluating Functions Answers

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1
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The table represents the function f(x).

Question illustration
A
–9
B
–1
C
1
D
9
2
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What is the inverse of the function f(x) = 2x + 1?

A
h(x) = x –
Option A
B
h(x) = x +
Option B
C
h(x) = x – 2
Option C
D
h(x) = x + 2
Option D
3

On a coordinate plane, a red curved line with an upward arc, labeled g of x, crosses the x-axis at (negative 2, 0), and the y-axis at (0, 4). A blue curved line with an upward arc, labeled f of x, crosses the y-axis at (0, 4) and the x-axis at (2, 0).

Question illustration
A
f(0) = 2 and g(–2) = 0
B
f(0) = 4 and g(–2) = 4
C
f(2) = 0 and g(–2) = 0
D
f(–2) = 0 and g(–2) = 0
4

Which represents the inverse of the function f(x) = 4x?

A
h(x) = x + 4
B
h(x) = x – 4
C
h(x) = x
Option C
D
h(x) = x
Option D
5

Two functions are graphed on the coordinate plane.

Question illustration
A
f(4) = g(4) and f(0) = g(0)
B
f(–4) = g(–4) and f(0) = g(0)
C
f(–4) = g(–2) and f(4) = g(4)
D
f(0) = g(–4) and f(4) = g(–2)
6

What is the inverse of the function f(x) = x + 2?

Question illustration
A
h(x) = 18x – 2
B
h(x) = 9x – 18
C
h(x) = 9x + 18
D
h(x) = 18x + 2
7

If f(x) = + 8, what is f(x) when x = 10?

Question illustration
A
4
B
9
C
13
D
36
8

Which statement is true regarding the graphed functions?

Question illustration
A
f(4) = g(4)
B
f(4) = g(–2)
C
f(2) = g(–2)
D
f(–2) = g(–2)
9

If f(x) = 5x + 40, what is f(x) when x = –5?

A
–9
B
–8
C
7
D
15
10

Which statement is true regarding the graphed functions?

Question illustration
A
f(0) = g(0)
B
f(–2) = g(–2)
C
f(0) = g(–2)
D
f(–2) = g(0)

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