A food maker estimated that the monthly cost in $ for producing b boxes of its cereal is c(b)=1200+0.9b+0.0002b^2. The revenue in $ the
company earns from selling b boxes of cereal is R(b)=2.8b-0.0001b^2. A) write equations for avrgvrevenue and marginal revenue functions. B) find the # of boxes that the company should produce monthly to max profit.