Let matrix A represent the sales (in thousands of dollars) for a certain company in 2018 in various cities, and let matrix B represent the sales (in thousands of dollars) for the same company in 2019 in the same cities. Chicago Atlanta Memphis 450 280 850 Wholesale A = 400 350 150 Retail Chicago Atlanta Memphis 415 340 750 Wholesale B = 450 340 240 Retail (a) Write the matrix that represents the total sales by type and city for both years. (b) Write the matrix that represents the change in sales by type and city from 2018 to 2019.

Let matrix A represent the sales (in thousands of dollars) for a certain company in 2018 in various cities, and let matrix B represent the sales (in thousands of dollars) for the same company in 2019 in the same cities. Chicago Atlanta Memphis 450 280 850 Wholesale A = 400 350 150 Retail Chicago Atlanta Memphis 415 340 750 Wholesale B = 450 340 240 Retail (a) Write the matrix that represents the total sales by type and city for both years. (b) Write the matrix that represents the change in sales by type and city from 2018 to 2019.

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter9: Systems Of Equations And Inequalities

Section: Chapter Questions

Problem 21T

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Referring to Exercise 19, suppose that the unit cost of distributing the products to stores is the same for each product but varies by warehouse because of the distances involved. It costs $0.75 to distribute one unit from warehouse 1 and $1.00 to distribute one unit from warehouse 2. Organize these costs into a matrix C and then use matrix multiplication to compute the total cost of distributing each product.

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