<< Chapter < Page Chapter >> Page >

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

Got questions? Get instant answers now!

When will the population reach 100,000?

Ten years after the model began

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

Find a reasonable domain and range for the function W .

Got questions? Get instant answers now!

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.

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

When did the baby weight 10.4 pounds?

At age 5.8 months

Got questions? Get instant answers now!

What is the output when the input is 6.2?

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

Find a reasonable domain and range for the function C .

Got questions? Get instant answers now!

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.

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

When will the output reach 0?

2063

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

Find and interpret the y -intercept.

Got questions? Get instant answers now!

Find and interpret the x -intercept.

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

Got questions? Get instant answers now!

Find and interpret the slope.

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

Find and interpret the y -intercept.

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

Got questions? Get instant answers now!

Find and interpret the x -intercept.

Got questions? Get instant answers now!

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

Got questions? Get instant answers now!

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?

Got questions? Get instant answers now!

Questions & Answers

what's atoms
Achol Reply
discuss how the following factors such as predation risk, competition and habitat structure influence animal's foraging behavior in essay form
Burnet Reply
location of cervical vertebra
KENNEDY Reply
What are acid
Sheriff Reply
define biology infour way
Happiness Reply
What are types of cell
Nansoh Reply
how can I get this book
Gatyin Reply
what is lump
Chineye Reply
what is cell
Maluak Reply
what is biology
Maluak
what's cornea?
Majak Reply
what are cell
Achol
Explain the following terms . (1) Abiotic factors in an ecosystem
Nomai Reply
Abiotic factors are non living components of ecosystem.These include physical and chemical elements like temperature,light,water,soil,air quality and oxygen etc
Qasim
Define the term Abiotic
Marial
what is biology
daniel Reply
what is diffusion
Emmanuel Reply
passive process of transport of low-molecular weight material according to its concentration gradient
AI-Robot
what is production?
Catherine
hello
Marial
Pathogens and diseases
how did the oxygen help a human being
Achol Reply
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, College algebra. OpenStax CNX. Feb 06, 2015 Download for free at https://legacy.cnx.org/content/col11759/1.3
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'College algebra' conversation and receive update notifications?

Ask