IMAT 2012 Q70 Maths-Inequalities

Hey! I’m a bit confused because I can´t tell the difference between C and D. Answer key says it’s C, how could I figure out this?
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Thank you soooo much in advance and I hope everyone have a great day :low_brightness::ok_woman:

Hi!
First: x^2 < 9

= x < 3

Secondly: 2x + 3 ≥ 5

= 2x ≥ 2

= x ≥ 1

Thus 1 ≤ x < 3.
Hope it helps:)

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Thank you! Yes, I had the same answer, what I dont understand is how C) and D) are different :pleading_face:

Hi!
Answer option D says that x <-3 but what we got by solving is X < 3 also even if you wanna multiply the other side by -1 the sign of inequality will reverse making it x>-3.
That’s why i think it’s wrong.
Hope it helps:)

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ohh sorryyy, I had a lapsus. I swear I saw -3 :sob:

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