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If the function P is graphed, find and interpret the slope of the function.

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When will the population reach 100,000?

Ten years after the model began

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What is the population in the year 12 years from the onset of the model?

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For the following exercises, consider this scenario: The weight of a newborn is 7.5 pounds. The baby gained one-half pound a month for its first year.

Find the linear function that models the baby’s weight W as a function of the age of the baby, in months, t .

W ( t ) = 0.5 t + 7.5

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Find a reasonable domain and range for the function W .

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If the function W is graphed, find and interpret the x - and y -intercepts.

( 15 , 0 ) : The x -intercept is not a plausible set of data for this model because it means the baby weighed 0 pounds 15 months prior to birth. ( 0 , 7 . 5 ) : The baby weighed 7.5 pounds at birth.

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If the function W is graphed, find and interpret the slope of the function.

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When did the baby weight 10.4 pounds?

At age 5.8 months

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What is the output when the input is 6.2?

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For the following exercises, consider this scenario: The number of people afflicted with the common cold in the winter months steadily decreased by 205 each year from 2005 until 2010. In 2005, 12,025 people were inflicted.

Find the linear function that models the number of people inflicted with the common cold C as a function of the year, t .

C ( t ) = 12 , 025 205 t

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Find a reasonable domain and range for the function C .

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If the function C is graphed, find and interpret the x - and y -intercepts.

( 58 . 7 , 0 ) : In roughly 59 years, the number of people inflicted with the common cold would be 0. ( 0 , 12 , 0 25 ) Initially there were 12,025 people afflicted by the common cold.

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If the function C is graphed, find and interpret the slope of the function.

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When will the output reach 0?

2063

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In what year will the number of people be 9,700?

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Graphical

For the following exercises, use the graph in [link] , which shows the profit, y , in thousands of dollars, of a company in a given year, t , where t represents the number of years since 1980.

Graph of a decreasing line from (15, 150) to (25, 130).  The x-axis goes from 0 to 30 in intervals of 5 and the y-axis goes from 125 to 155 in intervals of 5.

Find the linear function y , where y depends on t , the number of years since 1980.

y = 2 t +180

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Find and interpret the y -intercept.

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Find and interpret the x -intercept.

In 2070, the company’s profit will be zero.

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Find and interpret the slope.

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For the following exercises, use the graph in [link] , which shows the profit, y , in thousands of dollars, of a company in a given year, t , where t represents the number of years since 1980.

Graph of a line from (15, 150) to (25, 450).  The x-axis goes from 0 to 30 in intervals of 5 and the y-axis goes from 0 to 500 in intervals of 50.

Find the linear function y , where y depends on t , the number of years since 1980.

y = 3 0 t 3 00

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Find and interpret the y -intercept.

( 0 , 300 ) ; In 1980, the company lost $300,000.

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Find and interpret the x -intercept.

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Find and interpret the slope.

y = 30 t 300 of form y = m x + b , m = 30.

For each year after 1980, the company's profits increased $30,000 per year

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Numeric

For the following exercises, use the median home values in Mississippi and Hawaii (adjusted for inflation) shown in [link] . Assume that the house values are changing linearly.

Year Mississippi Hawaii
1950 $25,200 $74,400
2000 $71,400 $272,700

In which state have home values increased at a higher rate?

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Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
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mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
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Source:  OpenStax, College algebra. OpenStax CNX. Feb 06, 2015 Download for free at https://legacy.cnx.org/content/col11759/1.3
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