Question: LEARNING GOAL: To interpret partial derivatives and use approximation to make conclusions in applications.5. At a distance of x feet from the beach, the price

LEARNING GOAL: To interpret partial derivatives and use approximation to make conclusions in applications.5. At a distance of x feet from the beach, the price ($) of a plot of land of area a square foet is f(a,x).(a) What are the units of fa(a,x)?(b) What does fa(1000,470)-7 mean in practical terms?(c) What are the units of fx(a,x)?(d) What does fx(1000,470)=-4 mean in practical terms?(e) Which is cheaper:(i)1005 square foet that are 475 foet from the beach?(ii)995 square foet that are 468 feet from the beach?Justify your answer.

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