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8

Set 3: Polynomial Functions (Intermediate)

Explanation

Answer: C

PROBLEM

Add: (5x + 2) + (2x + 1). What is the coefficient of x in the result?

Add: (5x + 2) + (2x + 1). What is the coefficient of x in the result?

A.

6

B.

9

C.

7

✓ Correct
D.

5

Detailed Explanation

Choice C is the best answer. (5x + 2) + (2x + 1) = 7x + 3. Coefficient of x is 7.

Why others are wrong:
A: 6 is incorrect because it does not satisfy the equation.
B: 9 is incorrect because it does not satisfy the equation.
D: 5 is incorrect because it does not satisfy the equation.
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