Indefinite Integral in Use

The current circulation of the Investor's Digest is 3000 copies per week. The managing editor of the weekly projects a growth rate of 4+5tgig copies per week, t weeks from now, for the next 3 years. Based on her projection, what will the circulation of the digest be 125 weeks from now? Lorimar Watch Company manufactures travel clocks. The daily marginal cost function associated with producing these clocks is MTC(X)=D,000009X2 0,009x+8 where MC(X) is measured in dollars/unit and x denotes the number of units produced. Management has determined that the daily fixed cost incurred in producing these clocks is 120 dollars. Find the total cost incurred by Lorimar in producing the rst 150 travel clocks / day