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Which is the solution to [5x] is greater than 15?

This is an algebra II question that i can't for the life of me understand

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Steve S. | Tutoring in Precalculus, Trig, and Differential CalculusTutoring in Precalculus, Trig, and Diffe...
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[5x] > 15
 
If this is the Greatest Integer Function then
5x >= 16, x >= 3.2.

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The Greatest Integer Function is also called the Floor Function. E.g., [2.5] = 2, [-2.5] = -3, [2] = 2.
Vivian L. | Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACHMicrosoft Word/Excel/Outlook, essay comp...
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Hi Tracey;
5x>15
I do not know if you know the difference between < and >.  In the sixth grade, the way we remembered this is, The alligator is going to eat the bigger one.
 
We are going to proceed as if > is =.
5x>15
Let's divide both sides by 5...
(5x)/5>15/5
x>3
x is greater than 3.
The alligator will eat anything greater than 3.

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