The life expectancies of black males in the United States at various ages for 2006 are as shown below.Life Expectancy of BlackMales by AgeLife Expectancy(years)Age(years)At birth69.71060.92051.33042.433.55025.26018.27012.3(a) How rapidly, on average, does the life expectancy change between birth and the 50th year of life for black males in the United States? (Round your answer to two decimal places.)years per year(b) Compare the average rates of change of life expectancy for the 10-year periods between ages 50 and 60 and ages 60 and 70. (Round your answers to two decimal places.)between ages 50 and 60between ages 60 and 70--Selectthan between ages-SelectLife expectancy decreases more rapidly between ages The number of Internet users in Mexico between 2004 and 2008 can be modeled asu(t) 8.02(1.17) million userswhere t is the number of years since 2004.t(a) On average, what was the rate of change in the number of Internet users in Mexico between 2004 and 2007? (Round your answer to three decimal places.)million users per year(b) What was the percentage change in the number of Internet users in Mexico between 2004 and 2007? (Round your answer to three decimal places.)(c) The population of Mexico in 2008 was 109,955,400. What percentage of the Mexican population used the Internet in 2008? (Round your answer to three decimal places.)%

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Asked Sep 24, 2019
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The life expectancies of black males in the United States at various ages for 2006 are as shown below.
Life Expectancy of Black
Males by Age
Life Expectancy
(years)
Age
(years)
At birth
69.7
10
60.9
20
51.3
30
42.4
33.5
50
25.2
60
18.2
70
12.3
(a) How rapidly, on average, does the life expectancy change between birth and the 50th year of life for black males in the United States? (Round your answer to two decimal places.)
years per year
(b) Compare the average rates of change of life expectancy for the 10-year periods between ages 50 and 60 and ages 60 and 70. (Round your answers to two decimal places.)
between ages 50 and 60
between ages 60 and 70
--Select
than between ages
-Select
Life expectancy decreases more rapidly between ages
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The life expectancies of black males in the United States at various ages for 2006 are as shown below. Life Expectancy of Black Males by Age Life Expectancy (years) Age (years) At birth 69.7 10 60.9 20 51.3 30 42.4 33.5 50 25.2 60 18.2 70 12.3 (a) How rapidly, on average, does the life expectancy change between birth and the 50th year of life for black males in the United States? (Round your answer to two decimal places.) years per year (b) Compare the average rates of change of life expectancy for the 10-year periods between ages 50 and 60 and ages 60 and 70. (Round your answers to two decimal places.) between ages 50 and 60 between ages 60 and 70 --Select than between ages -Select Life expectancy decreases more rapidly between ages

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The number of Internet users in Mexico between 2004 and 2008 can be modeled as
u(t) 8.02(1.17) million users
where t is the number of years since 2004.t
(a) On average, what was the rate of change in the number of Internet users in Mexico between 2004 and 2007? (Round your answer to three decimal places.)
million users per year
(b) What was the percentage change in the number of Internet users in Mexico between 2004 and 2007? (Round your answer to three decimal places.)
(c) The population of Mexico in 2008 was 109,955,400. What percentage of the Mexican population used the Internet in 2008? (Round your answer to three decimal places.)
%
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The number of Internet users in Mexico between 2004 and 2008 can be modeled as u(t) 8.02(1.17) million users where t is the number of years since 2004.t (a) On average, what was the rate of change in the number of Internet users in Mexico between 2004 and 2007? (Round your answer to three decimal places.) million users per year (b) What was the percentage change in the number of Internet users in Mexico between 2004 and 2007? (Round your answer to three decimal places.) (c) The population of Mexico in 2008 was 109,955,400. What percentage of the Mexican population used the Internet in 2008? (Round your answer to three decimal places.) %

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Expert Answer

Step 1

Hey, since there are multiple questions posted, we will answer first question. If you want any specific question to be answered, then please submit that question only or specify the question number in your message.

Note that, "how rapidly, on average" means the rate change. In this case this is represented by the slope of a line between the points of intersect:

(a) The life expectancy changes between birth and the 50th year of life for black males on average in the united states is,

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(25.2-69.7) (50-0) т 44.5 50 0.89 years years Thus, the life expectancy changes between birth and the 50h year of life for black males 0.89 years on average is years

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Step 2

(b) The average rates of change of the life ex...

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(18.2-25.2) (60-50) т 7 10 0.7 years year Thus, the average rates of change of the life expectancy between the ages 50 and 60 is 0.7 years year

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