3. As cars travel on gravel roads, the roads erode and take on a "washboard" look due to the formation of grooves. If the grooves can be modelled by a sinusoidal equation of the form y=asin(bx+c)+d then the distance between the grooves of a "washboard" road could be found by using the parameter Α. a В. Б С. с D. d A hiologist collects data on a population of rabbits as indicated below.

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