Set 6: Linear Inequalities (Intermediate)

Choice B is correct. Choice B is the correct answer. Qualifying for a higher tier automatically means meeting that tier's minimum. 1. 4 K requirement: Speed must be at least 25 Mbps 2. Translation: "At least 25" means $s \geq 25$ 3. Logic: If someone qualifies for 4 K, their speed MUST be $\geq 25$ Strategic Tip: Meeting a "higher" requirement automatically satisfies all "lower" requirements as well. Choice A is incorrect because $s < 25$ would NOT qualify for 4 K (contradicts the premise). Choice C is incorrect because this range represents speeds that qualify for HD but NOT 4 K. Choice D is incorrect because $s = 25$ is the minimum, but 4 K could have any speed $\geq 25$ (like 30, 50, 100 Mbps).