Posted by Rob on Tuesday, March 8, 2011 at 5:59pm.
a plane flies due north at 300 mi/h for 3 h then due west at 250 mi/h. If x represents the number of hours the plane is flying due west, determine for what values of x the plane will be more than 3700 mi from it's original point.

Math  Reiny, Tuesday, March 8, 2011 at 6:45pm
(250x)^2 + 900^2 > 3700^2
x^2 > 206.08
x > 14.3555