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A single oral dose of medication is given to a patient. The concentration t hours Enter t values with two decimal places and C values as integers. after the dose is administered is given by (a) The maximum concentration occurs at t = hr. C(f) = 547[exp(-0.1992f) - exp(-0.3385f)] ng/ml (a) When does the maximum concentration occur? (b) The maximum concentration is ng/mL. (b) What is the maximum concentration? Graph: Submit the graph in the "Show work" window. Label the axes and important points. Sketch the graph of C(f) for 0