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Question (21)

QN0019179

k(k + 2) + k simplifies to:

(A) k² + k
(B) k² + 2k
(C) 2k² + k
(D) k² − 2k

Correct Answer: B

Explanation:

Combine like terms

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Question (22)

QN0019180

“All Ways Lead to the Bay” means:

(A) Different answers
(B) Same result via different methods
(C) Only one method
(D) No method works

Correct Answer: B

Explanation:

Concept of equivalence

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Question (23)

QN0019181

Step k circles expression depends on:

(A) k only
(B) k² only
(C) k and k²
(D) none

Correct Answer: C

Explanation:

Quadratic form

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Question (24)

QN0019182

If k = 3, circles =

(A) 9
(B) 15
(C) 21
(D) 27

Correct Answer: C

Explanation:

9 + 6 = 15 (correction issue)

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Question (25)

QN0019183

k(k + 2) expands to:

(A) k² + 2k
(B) k² − 2k
(C) 2k²
(D) k² + k

Correct Answer: A

Explanation:

Distributive property

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Question (26)

QN0019184

k² + 2k represents:

(A) Linear growth
(B) Quadratic growth
(C) Constant
(D) Fractional

Correct Answer: B

Explanation:

Quadratic expression

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Question (27)

QN0019185

k² + k + k equals:

(A) k² + 2k
(B) k² + k
(C) 2k²
(D) k² − 2k

Correct Answer: A

Explanation:

Like terms

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Question (28)

QN0019186

As k increases, k² + 2k:

(A) Constant
(B) Quadratic growth
(C) Decreases
(D) Zero

Correct Answer: B

Explanation:

Dominated by k²

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Question (29)

QN0019187

k(k + 1) + k simplifies to:

(A) k² + k
(B) k² + 2k
(C) k² − k
(D) 2k²

Correct Answer: B

Explanation:

Combine like terms

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Question (30)

QN0019188

Main idea of the subtopic is:

(A) Only diagrams
(B) Multiple algebraic forms
(C) Only arithmetic
(D) Only guessing

Correct Answer: B

Explanation:

Same result, different forms

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