Three friends A,B and C started their journey at 08:00 am from the points (2,31),(3,51), and (6,0) respectively. A followed the path along the curve 3x2+2x+15 and B followed the path along the curve 2x2+10x+3. The all meet at 11:00 am at a point P whose x coordinate is greater than 4. If C followed a straight-line path, and one unit is equal to 1 km then what was the speed of C?

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Coordinate Geometry

Coordinate geometry, also known as analytic geometry or Cartesian geometry in classical mathematics, is a type of geometry that is studied using a coordinate system. Coordinate geometry is a branch of mathematics that describes the position of points on a plane using an ordered pair of numbers called coordinates.