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8

Set 4: Polynomial Functions (Intermediate)

Explanation

Answer: C

PROBLEM

Subtract: (7x + 9) - (3x + 3). What is the coefficient of x in the result?

Subtract: (7x + 9) - (3x + 3). What is the coefficient of x in the result?

A.

5

B.

6

C.

4

✓ Correct
D.

2

Detailed Explanation

Choice C is the best answer. (7x + 9) - (3x + 3) = 4x + 6. Coefficient of x is 4.

Why others are wrong:
A: 5 is incorrect because it does not satisfy the equation.
B: 6 is incorrect because it does not satisfy the equation.
D: 2 is incorrect because it does not satisfy the equation.
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