Suppose a ship is sailing at a rate of 35 km h parallel to a straight shoreline The ship is 10 km from shore when it passes a lighthouse at 11 am 0 a Let k be the distance between the lighthouse and the ship Let d be the distance that the ship has travelled since 11 am Express k as a function of d and include a diagram b Express d as a function of t the time elapsed since 11 am c Find ko d What does this function represent