10
Answer: DSet 3: Polynomial Functions (Intermediate)
Explanation
PROBLEM
Subtract: (8x + 5) - (1x + 4). What is the coefficient of x in the result?
Subtract: (8x + 5) - (1x + 4). What is the coefficient of x in the result?
A.
9
B.
6
C.
5
D.✓ Correct
7
Detailed Explanation
Choice D is the best answer. (8x + 5) - (1x + 4) = 7x + 1. Coefficient of x is 7.
Why others are wrong:
A: 9 is incorrect because it does not satisfy the equation.
B: 6 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.
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