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8

Set 1: Polynomial Functions (Advanced)

Explanation

Answer: D

PROBLEM

Subtract: (6x + 9) - (1x + 2). What is the coefficient of x in the result?

Subtract: (6x + 9) - (1x + 2). What is the coefficient of x in the result?

A.

7

B.

10

C.

4

D.

5

✓ Correct

Detailed Explanation

Choice D is the best answer. (6x + 9) - (1x + 2) = 5x + 7. Coefficient of x is 5.

Why others are wrong:
A: 7 is incorrect because it does not satisfy the equation.
B: 10 is incorrect because it does not satisfy the equation.
C: 4 is incorrect because it does not satisfy the equation.
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