7
Answer: ASet 12: Linear Inequalities (Intermediate)
Explanation
Solve:
A.
✓ Correct
B.
C.
D.
Detailed Explanation
Choice A is correct. Choice A is the correct answer. Distribute and collect terms. 1. Distribute: 2. Add 4 x: 3. Add 16: 4. Divide by 6: , which simplifies to or Strategic Tip: Be careful with signs when distributing negatives. . Choice B is incorrect because it reverses the inequality direction (should be ). Choice C is incorrect because it might result from arithmetic errors like . Choice D is incorrect because it combines wrong value and wrong direction.
Key Steps:
•
The correct answer is
Why others are wrong:
B: Choice B is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.
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