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WGU D126 - MATH 1112 Mathematics for Elementary Educators II - Comprehensive OA Guide 2024 R227,39   Add to cart
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WGU D126 - MATH 1112 Mathematics for Elementary Educators II - Comprehensive OA Guide 2024
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WGU D126 - MATH 1112 Mathematics for Elementary Educators II - Comprehensive OA Guide 2024WGU D126 - MATH 1112 Mathematics for Elementary Educators II - Comprehensive OA Guide 2024WGU D126 - MATH 1112 Mathematics for Elementary Educators II - Comprehensive OA Guide 2024

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  • August 13, 2024
  • 22
  • 2024/2025
  • Exam (elaborations)
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  • wgu d126 math 1112 mathematics for elementary ed

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  • Education
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D126 MATH 1112



Mathematics for
Elementary Educators II

OBJECTIVE ASSESSMENT GUIDE



2024

, What is the value of the limit lim(x->2) (3x^2 - 8x + 4)?

A) 4

B) 8
C) 12

D) 16

Correct Answer: A) 4

Rationale: By substituting x=2 into the expression, we get 3(2)^2 - 8(2) + 4
= 4.



Fill-in-the-Blank:

The derivative of f(x) = 2x^3 - 6x^2 + 5x - 9 is f'(x) = __.

Correct Answer: f'(x) = 6x^2 - 12x + 5
Rationale: The derivative of x^n is nx^(n-1), so the derivative of the given
function is calculated accordingly.



True/False:

The equation x^2 + 4x - 5 = 0 has real roots.

A) True

B) False

, Correct Answer: A) True
Rationale: The discriminant b^2 - 4ac = 4^2 - 4(1)(-5) = 36, which is
positive, indicating real roots.



Multiple Response:

Which of the following are solutions to the inequality 2x + 3 2

C) x 4

Correct Answer: A) x < 2, C) x < 4
Rationale: By solving the inequality, we get x < 2 and x < 4 as the valid
solutions.



Multiple Choice:

What is the value of the integral ∫(2x + 3)dx?

A) x^2 + 3x + C

B) x^2 + 3x^2 + C

C) x^2 + 3x^2/2 + C

D) x^2 + 3 + C

Correct Answer: A) x^2 + 3x + C
Rationale: The integral of 2x is x^2 and the integral of 3 is 3x. Adding the
constant of integration C gives the result.



Fill-in-the-Blank:

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