Algebra practice question

Answer: A. x ≤ 9

Subtract 5: −x/3 ≥ −3. Multiply by −3 and flip: x ≤ 9.

Why the other answers are wrong

B. x ≥ 9

x ≥ 9 forgets to flip when multiplying by a negative.

C. x ≤ −9

x ≤ −9 flips but gets the sign of 9 wrong.

D. x ≥ 1

x ≥ 1 comes from treating 5 − x/3 as (5 − x)/3 and dropping the flip.

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