Mean Income ($1,000) 2020 Population 2030 Population Female (Millions) Male (Millions) Female (Millions) Male (Millions) 15 to 24 14 23 24 25 26 25 to 44 42 43 43 45 46 45 to 64 48 43 41 42 41 65 to 84 29 31 20 40 31 Give a single matrix formula that expresses the total income in 2030. (Take D to be the total income, take N to be the income per person, and take F and M to be, respectively, the female and male populations in 2030.)   A) D = N(F + M) B) D = NFM C) D = N(F − M) D) D = NF − M E) D = NF + M   Compute its value, rounded to two significant digits. $  ____________ trillion

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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The following table representing a spreadsheet shows the projected 2020 and 2030 U.S. male and female population in various age groups, as well as per capita incomes.†
Age Mean
Income
($1,000)
2020 Population 2030 Population
Female
(Millions)
Male
(Millions)
Female
(Millions)
Male
(Millions)
15 to 24 14 23 24 25 26
25 to 44 42 43 43 45 46
45 to 64 48 43 41 42 41
65 to 84 29 31 20 40 31
Give a single matrix formula that expresses the total income in 2030. (Take D to be the total income, take N to be the income per person, and take F and M to be, respectively, the female and male populations in 2030.)
 
A) D = N(F + M)
B) D = NFM
C) D = N(F − M)
D) D = NF − M
E) D = NF + M
 
Compute its value, rounded to two significant digits.
$  ____________ trillion
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