39. Sales Let matrix A represent the sales (in thousands of dollars) for the Walbash 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 375 300 710 Wholesale B = %3D 410 300 200 Retail (a) Write the matrix that represents the total sales by type and city for both (b) Write the matrix that represents the change in sales by type and city from 2018 to 2019, years.

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter5: A Survey Of Other Common Functions
Section5.3: Modeling Data With Power Functions
Problem 6E: Urban Travel Times Population of cities and driving times are related, as shown in the accompanying...
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#39 please write out all steps and explain them because i will not understand otherwise
ppines
5.5
Females
14-17 18-64 Over age 64
99,918
:4
Under age 5 5-13
26,654
95
2015
10,288
17,988
8153
8104 100,863
30,999
2020
10,658
18,640
8093 101,162
8653 101,839
35,848
40,066
2025
10,807
19,301
pro-
2030
10,875
19,717
39. Sales Let matrix A represent the sales (in thousands
of dollars) for the Walbash 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.
nt,
Chicago
Atlanta
Memphis
450
280
850
Wholesale
A =
400
350
150
Retail
Chicago
[375
B =
410
Atlanta
Memphis
300 710
Wholesale
300
200
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.
40. Opinion polls A poll of 3320 people revealed that
of the respondents that were registered Republicans,
843 approved of their representative's job performance,
426 did not, and 751 had no opinion. Of the registered
Democrats, 257 approved of their representative's job
performance, 451 did not, and 92 had no opinion. Of
those registered as independents, 135 approved, 127 did
not approve, and 38 had no opinion. Of the remaining
respondents, who were not registered, 92 approved,
64 did not approve and 44 he
Transcribed Image Text:ppines 5.5 Females 14-17 18-64 Over age 64 99,918 :4 Under age 5 5-13 26,654 95 2015 10,288 17,988 8153 8104 100,863 30,999 2020 10,658 18,640 8093 101,162 8653 101,839 35,848 40,066 2025 10,807 19,301 pro- 2030 10,875 19,717 39. Sales Let matrix A represent the sales (in thousands of dollars) for the Walbash 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. nt, Chicago Atlanta Memphis 450 280 850 Wholesale A = 400 350 150 Retail Chicago [375 B = 410 Atlanta Memphis 300 710 Wholesale 300 200 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. 40. Opinion polls A poll of 3320 people revealed that of the respondents that were registered Republicans, 843 approved of their representative's job performance, 426 did not, and 751 had no opinion. Of the registered Democrats, 257 approved of their representative's job performance, 451 did not, and 92 had no opinion. Of those registered as independents, 135 approved, 127 did not approve, and 38 had no opinion. Of the remaining respondents, who were not registered, 92 approved, 64 did not approve and 44 he
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