h.w The EFISCEN wOod product model classifies wood products according to t! span. There are four classifications: short (1 year), medium short (4 years). long (16 years), and long (50 years). Based on data obtained from the Europ est Institute, the percentage of remaining wood products after i years for wo ucts with long life-spans (such as those used in the building industry) is give 100.3952 P(t) = 1 + 0.0316e0.0581 %3D (a) What is the decay rate? (b) What is the percentage of remaining wood products after 10 years? (c) How long does it take for the percentage of remaining wood product- 50%? (d) Explain why the numerator given in the model is reasonable.

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