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preinceton review inequality question

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preinceton review inequality question

by resilient » Thu Feb 28, 2008 8:48 pm
what is the value of T?

1. 2t -1 greater than or equal to 5

2. 3t +2 less than or equal to 11


qa is C

1. = t greater than or equal to 3
2. = t less than or equal to 3

together the statement tells that T can be any number on the number line

therefore I choose E.

How is QA C?
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by codesnooker » Thu Feb 28, 2008 10:21 pm
Its simple dude! In fact you have answered this yourself.

Statement 1 deduce value of t >= 3 and statement 2 deduce value of t <= 3, so if you consider both statements together on the number line, they only location where the both condition satisfied is at t = 3.

So by both equation you can easily determine the value of t.

So answer should be C
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