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March 28, 2015

March 28, 2015

Posted by **Amber** on Monday, November 16, 2009 at 8:19am.

- Algebra -
**drwls**, Monday, November 16, 2009 at 10:44amLet t be the time after the first jet leaves for LA, and x be the location of a plane, measured from LA.

2100 - x = 500 t

x = 700 (t -1) = 700 t - 700

Substitute 2100 - 500 t for x in the second equation and solve for t.

2100 - 500 t = 700 t - 700

2800 = 1200 t

t = 7/3 hours = 2 hours & 20 minutes

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