Let L = f (h) be the amount of water (in liters) a species of tree needs per week when it is h meters tall. A particular tree of this species in the PSU arboretum is hPmeters tall, and so it requires f (hP) liters of water per week, and we define vP= f (hP). (a) What is the practical meaning of the expression f (hP+ 3)? (b) What is the practical meaning of the statement f (hP+ 1) = vP+ 3? (c) What is the practical meaning of f (hP/2)? (d) What is the practical meaning of f (hP−5) = vP/2?

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