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Question 1: Two cars start moving from the same point. one travels south at 48 mi/h...

Question 1:
Two cars start moving from the same point. one travels south at 48 mi/h and the other travels west at 20 mi/h. At what rate is the distance between the cars increasing two hours later?

Question 2:
A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1 m/s, how fast is the boat approaching the dock when it is 7 m from the dock? (round your answer to two decimal places)
Math   Precalculus   
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