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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 450 400 -[ A = Chicago 395 430 B = 280 350 Atlanta Memphis 320 730 320 220 -1 (a) Write the matrix that represents the total sales by type and city for both years. ↓1 850 150 Retail Wholesale 41 Wholesale Retail (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 450 400 -[ A = Chicago 395 430 B = 280 350 Atlanta Memphis 320 730 320 220 -1 (a) Write the matrix that represents the total sales by type and city for both years. ↓1 850 150 Retail Wholesale 41 Wholesale Retail (b) Write the matrix that represents the change in sales by type and city from 2018 to 2019.

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.3: Matrix Algebra
Problem 65E
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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 850 150 -[ A = 450 400 B = 280 350 Chicago 395 · [ 430 (a) Write the matrix that represents the total sales by type and city for both years. Atlanta 320 320 ↓1 Memphis 730 220 Wholesale Retail ↓1 Wholesale Retail (b) Write the matrix that represents the change in sales by type and city from 2018 to 2019.
Transcribed Image Text: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 850 150 -[ A = 450 400 B = 280 350 Chicago 395 · [ 430 (a) Write the matrix that represents the total sales by type and city for both years. Atlanta 320 320 ↓1 Memphis 730 220 Wholesale Retail ↓1 Wholesale Retail (b) Write the matrix that represents the change in sales by type and city from 2018 to 2019.
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