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3. The prot of a fast food restaurant is given by P(t) = 200t' + 5001' + 150t, where t is measured In the number years after 2000 (for example. In 2002, t = 2) and P(t) Is measured In dollars. The mrgfnolprpt Is given by the Instantaneous rate of than! of the prot function. a. What are the units of the marginal prot function? b. Find the marginal prot function? c. Compute the marginal prot In 2010