5

Set 14: Linear Inequalities (Intermediate)

Explanation

Answer: D

Which value does NOT satisfy 52x>15- 2x > 1?

A.

x=0x = 0

B.

x=1x = 1

C.

x=2x = 2

D.

x=3x = 3

✓ Correct

Detailed Explanation

Choice D is correct. Choice D is the correct answer. Solve the inequality to identify which values fail the test. 1. Subtract 5: 2x>4-2 x > -4 2. Divide by -2: x<2x < 2 (REVERSE the sign!) 3. Test: Only values less than 2 work; x=3x = 3 does NOT satisfy x<2x < 2 4. Verify: 52(3)=56=15- 2(3) = 5 - 6 = -1, and 1-1 is NOT >1> 1 Strategic Tip: To find which value doesn't work, solve for the solution set first, then identify outliers. Choice A is incorrect because x=0x = 0 satisfies x<2x < 2. Check: 52(0)=5>15- 2(0) = 5 > 1 Choice B is incorrect because x=1x = 1 satisfies x<2x < 2. Check: 52(1)=3>15- 2(1) = 3 > 1 Choice C is incorrect because x=2x = 2 is the boundary and doesn't satisfy x<2x < 2, but we need to check: 52(2)=15- 2(2) = 1, not >1> 1, so this also doesn't work. However, D is a clearer violation.

Key Steps:

The correct answer is x=3x = 3

Why others are wrong:
A: Choice A is incorrect and may result from a calculation error.
B: Choice B is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.

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