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

Question

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

Answer 1

[5x] > 15

 

If this is the Greatest Integer Function then

5x >= 16, x >= 3.2.

Answer 2

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.