Question 587192
The flight path of Charlie's plane is (x-12)^2+(y-4)^2=9 and the flight path of Jackie's plane is (x-17)^2 + (y-5)^2 = 4.

If Charlie and Jackie are flying their planes at the same altitude, is it likely that the planes will collide at some time?  Justify your response, clearly stating any assumptions.
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Their flight paths don't intersect, no collision.
They are 2 circles.  If you find the difference between the centers, you see it's greater than the sum of their radii --> no intersection.
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