AnswersCR27 ALG 1-1200310-S2-Degele-VOL7006PIntroduction to Quadratic Functions

Introduction to Quadratic Functions Answers

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What is f(−3) for the function f(a)=−2a2−5a+4?

A
−29
B
−23
C
1
D
37
2
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What possible changes can Martha make to correct her homework assignment? Select two options.

A
The first term, 5x3, can be eliminated.
B
The exponent on the first term, 5x3, can be changed to a 2 and then combined with the second term, 2x2.
C
The exponent on the second term, 2x2, can be changed to a 3 and then combined with the first term, 5x3.
D
The constant, –3, can be changed to a variable.
E
The 7x can be eliminated.
3

liana started to evaluate the function f(x) = 2x2 – 3x + 7 for the input value 2.f(x) = 2(2)2 – 3(2) + 7 = 2(4) – 3(2) + 7

A
9
B
10
C
16
D
17
4

Which represents a quadratic function?

A
f(x) = −8x3 − 16x2 − 4x
B
f (x) = x 2 + 2x − 5
Option B
C
f(x) = + 1
Option C
D
f(x) = 0x2 − 9x + 7
5

Consider the quadratic function f(x)=8x2−7x+6. What is the constant of the function?

A
−7
B
6
C
7
D
8
6

A 2-column table with 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 21, 10, 5, 6, 13.

Question illustration
A
f(x) = 3x2 + 2x – 5
B
f(x) = 3x2 – 2x + 5
C
f(x) = 2x2 + 3x – 5
D
f(x) = 2x2 – 2x + 5
9

Which is f(5) for the function –2x2 + 2x – 3?

A
–107
B
–63
C
–43
D
–37

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