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7

Set 3: Polynomial Functions (Intermediate)

Explanation

Answer: C

PROBLEM

Subtract: (7x + 8) - (2x + 4). What is the coefficient of x in the result?

Subtract: (7x + 8) - (2x + 4). What is the coefficient of x in the result?

A.

4

B.

6

C.

5

✓ Correct
D.

3

Detailed Explanation

Choice C is the best answer. (7x + 8) - (2x + 4) = 5x + 4. Coefficient of x is 5.

Why others are wrong:
A: 4 is incorrect because it does not satisfy the equation.
B: 6 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.
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