A rectangular billiard table has vertice...

A rectangular billiard table has vertices at `P(0,0),Q(0,7),R(10 ,7),` and `S(10 ,0)dot` A small billiard ball starts at `M(3,4)` , moves in a straight line to the top of the table, bounces to the right side of the table, and then comes to rest at `N(7,1)` . The `y-` coordinate of the point where it hits the right side is (a)`3.7` (b) `3.8` (c)` 3.9 `(d) `4`

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