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4

Set 3: Polynomial Functions (Advanced)

Explanation

Answer: B

PROBLEM

Subtract: (6x + 9) - (2x + 2). What is the coefficient of x in the result?

Subtract: (6x + 9) - (2x + 2). What is the coefficient of x in the result?

A.

5

B.

4

✓ Correct
C.

2

D.

3

Detailed Explanation

Choice B is the best answer. (6x + 9) - (2x + 2) = 4x + 7. Coefficient of x is 4.

Why others are wrong:
A: 5 is incorrect because it does not satisfy the equation.
C: 2 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.
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