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The manufacturing cost of a smartphone is approximated by M(r, y) = 45x + 40y - 20ry+ 50 where x is the cost of the parts and y is the cost of the labor. Right now, the company spends $9 on parts and $15 on labor. Use differentials to approximate the change in cost if the company decreases the cost of parts by $0.13 and increases the cost of labor by $0.23. Round your answer to two decimal places.

The manufacturing cost of a smartphone is approximated by M(r, y) = 45x + 40y - 20ry+ 50 where x is the cost of the parts and y is the cost of the labor. Right now, the company spends $9 on parts and $15 on labor. Use differentials to approximate the change in cost if the company decreases the cost of parts by $0.13 and increases the cost of labor by $0.23. Round your answer to two decimal places.

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.3: Lines
Problem 92E
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The manufacturing cost of a smartphone is approximated by M(x, y) = 45x + 40y ? – 20xy + 50 where x is the cost of the parts and y is the cost of the labor. Right now, the company spends $9 on parts and $15 on labor. Use differentials to approximate the change in cost if the company decreases the cost of parts by $0.13 and increases the cost of labor by $0.23. Round your answer to two decimal places.
Transcribed Image Text:The manufacturing cost of a smartphone is approximated by M(x, y) = 45x + 40y ? – 20xy + 50 where x is the cost of the parts and y is the cost of the labor. Right now, the company spends $9 on parts and $15 on labor. Use differentials to approximate the change in cost if the company decreases the cost of parts by $0.13 and increases the cost of labor by $0.23. Round your answer to two decimal places.
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