hirendhanak wrote:
Which of the following inequalities is equivalent to 10 – 2x > 18?
(A) x > -14
(B) x > -4
(C) x > 4
(D) x < 4
(E) x < -4
Another approach to
test values of x and eliminate answer choices.
An easy one to start with is x = 0
Replace x with 0 to get: 10 – 2(0) > 18
Simplify to get: 10 > 18. Doesn't work.
So, x cannot equal 0.
Since answer choices B and D suggest that 0 is a possible value of x, we can ELIMINATE those answer choices
We're left with A, C and E
Now try x = 15
Replace x with 15 to get: 10 – 2(15) > 18
Simplify to get: -20 > 18. Doesn't work.
So, x cannot equal 15.
Since answer choices A and C suggest that 15 is a possible value of x, we can ELIMINATE those answer choices
By the process of elimination, we can conclude that the correct answer is E
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