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October 20, 2014

October 20, 2014

Posted by **Elle** on Friday, July 24, 2009 at 2:22pm.

a) x+y</13, x>/4, y</6

b) x+y>/13, x<6, y>/4

c) xy</13, x>4, y<6

d) x+y</6+4, xy</13

- Math -
**Marth**, Friday, July 24, 2009 at 7:49pmx+y <= 13, because she will spend up to 13 hours studying.

x >= 4, because she will spend at least 4 hours studying chemistry.

y <= 6, because she will spend up to 6 hours studying French.

You have to look at the keywords - "up to," "at least," to determine which inequality to use.

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