7
Answer: ASet 1: Polynomial Functions (Intermediate)
Explanation
PROBLEM
Subtract: (9x + 7) - (2x + 2). What is the coefficient of x in the result?
Subtract: (9x + 7) - (2x + 2). What is the coefficient of x in the result?
A.✓ Correct
7
B.
5
C.
14
D.
8
Detailed Explanation
Choice A is the best answer. (9x + 7) - (2x + 2) = 7x + 5. Coefficient of x is 7.
Why others are wrong:
B: 5 is incorrect because it does not satisfy the equation.
C: 14 is incorrect because it does not satisfy the equation.
D: 8 is incorrect because it does not satisfy the equation.