One inch jumps alternately back and forth in successive jumps. For each meter traveled horizontally in one direction, in

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One inch jumps alternately back and forth in successive jumps.
For each meter traveled horizontally in one direction, in the next
jump it travels ,1/3. meters in the other direction. On the first
journey it travels 3 meters forward.
a)Graphically represent the situation posed.
b)Find the displacement (in meters) of the flea at the end of
the first, second and third jump.
c) Pose an expression for the displacement traveled by the flea
at the end of the n-th jump.
d)Calculate the total displacement traveled by the flea in the
long term.