A company is considering a new manufacturing process in one of its plants. The new process provides substantial initial savings, with the savings declining with time x according to the rate-of-savings function S'(x)=200-x^2 where x is measured in years and S′(x) in thousands of dollars per year. At the same time, the cost of operating the new process increases with time x according to the rate-of-cost function (in thousands of dollars per year) C'(x)=0.3x^2+20/3x   a. to maximize savings, for how many years should the company use the new process?  b. Use Desmos to check your answer from part (a): Build up a graph and shade the appropriate area that corresponds to the maximum savings.  c. What is the net savings 8 years after the process has been implemented? 12 years after?  d. Use Desmos to check your answer from part (c): Build up a graph and shade the appropriate area that corresponds to the maximum savings.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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A company is considering a new manufacturing process in one of its plants. The new process provides substantial initial savings, with the savings declining with time x according to the rate-of-savings function

S'(x)=200-x^2

where x is measured in years and S′(x) in thousands of dollars per year. At the same time, the cost of operating the new process increases with time x according to the rate-of-cost function (in thousands of dollars per year)

C'(x)=0.3x^2+20/3x

 

a. to maximize savings, for how many years should the company use the new process? 

b. Use Desmos to check your answer from part (a): Build up a graph and shade the appropriate area that corresponds to the maximum savings. 

c. What is the net savings 8 years after the process has been implemented? 12 years after? 

d. Use Desmos to check your answer from part (c): Build up a graph and shade the appropriate area that corresponds to the maximum savings. 

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