An importer of Brazilian coffee estimates that local consumers will buy approximately Q (p) = 4374/p kilograms of the coffee per week when the price is p dollars per kilogram. It is estimated that t weeks from now the price of this coffee will be p (t) = 0.04t + 0.2t + 12 dollars per kilogram. a. Express the weekly demand (kilograms sold) for the coffee as a function of t. Q (p (t)) = b. How many kilograms of the coffee will consumers be buying from the importer 10 weeks from now? Q (10) = c. When will the demand for the coffee be 30.375 kilograms? 30.375 =