Answer the questions in Exercise 20 for a machine that generates revenue at the rate R'(t) =

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Answer the questions in Exercise 20 for a machine that generates revenue at the rate R'(t) = 7,250 − 18t2 dollars per year and for which costs accumulate at the rate C'(t) = 3,620 + 12t2 dollars per year.


Data from Exercises 20

Suppose that when it is t years old, a particular industrial machine generates revenue at the rate R'(t) = 6,025 – 8t2 dollars per year, while operating and maintenance costs accumulate at the rate C'(t) = 4,681 + 13t2 dollars per year.

a. The useful life of a machine is the number of years T before the profit it generates starts to decline. What is the useful life of this machine?

b. Compute the net profit generated by the machine over its useful lifetime.

c. Sketch the revenue rate curve y = R'(t) and the cost rate curve y = C'(t), and shade the region whose area represents the net profit computed in part (b).

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Calculus For Business, Economics And The Social And Life Sciences

ISBN: 9780073532387

11th Brief Edition

Authors: Laurence Hoffmann, Gerald Bradley, David Sobecki, Michael Price

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