C957 Unit 3 Module 3 exam with correct
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answers
The |population |of |a |small |town |is |shown |in |the |following |table:
Year |Population
2000 |7,400
2002 |8,300
2005 |9,000
What |was |the |average |rate |of |change |between |the |years |2000 |and |2005, |and |what |is |an |accurate |
interpretation |of |the |change?
A) |The |average |rate |of |change |was |450 |people |per |year. |The |mayor |can |anticipate |seeing |about |450 |
people |a |year |moving |into |the |town, |based |on |this |data.
B) |The |average |rate |of |change |was |-320 |people |per |year. |The |mayor |can |anticipate |seeing |about |320 |
people |a |year |moving |away |from |the |town, |based |on |this |data.
C) |The |average |rate |of |change |was |320 |people |per |year. |The |mayor |can |anticipate |seeing |about |320 |
people |a |year |moving |into |the |town, |based |on |this |data.
D) |The |average |rate |of |change |was |-500 |people |per |year. |The |mayor |can |anticipate |seeing |about |500 |
people |a |year |moving |away |from |the |town, |based |on |this |data. |- |CORRECT |ANSWER💢✔The |average |
rate |of |change |was |320 |people |per |year. |The |mayor |can |anticipate |seeing |about |320 |people |a |year |
moving |into |the |town, |based |on |this |data.
The |price |of |electricity |per |kilowatt |hour |(kWh) |in |a |certain |city |is |recorded |in |the |following |table: |
Years |Cost |per |kWh
2000 |$0.08
2005 |$0.15
2010 |$0.10
What |is |the |average |rate |of |change |in |electricity |price |from |2005 |to |2010? |What |does |that |mean?
A) |The |average |rate |of |change |is |$0.002 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |increasing |at |$0.002 |per |kWh |every |year |from |2005 |to |2010.
, B) |The |average |rate |of |change |is |−$0.005 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |decreasing |at |$0.005 |per |kWh |every |year |from |2000 |to |2010.
C) |The |average |rate |of |change |is |−$0.01 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |decreasing |at |$0.01 |per |kWh |every |year |from |2005 |to |2010.
D) |The |average |rate |of |change |is |$0.01 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |increasing |at |$0.01 |per |kWh |every |year |from |2005 |to |2010. |- |CORRECT |ANSWER💢✔The |
average |rate |of |change |is |−$0.01 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |been |
decreasing |at |$0.01 |per |kWh |every |year |from |2005 |to |2010.
The |function |f(t) |models |the |percent |of |population |who |use |the |Internet, |where |t |is |the |number |of |
years |since |1995. |During |a |certain |year, |the |rate |of |internet |usage |grew |to |approximately |one-third |of
|the |world |population.
Years |Since |1995 |Percent |of |Worldwide |Population
0 |0.8
5 |6.8
10 |15.8
15 |28.9
20 |43.2
In |about |what |year |did |the |rate |of |internet |usage |grow |to |approximately |one-third |of |the |world |
population, |and |what |coordinate |pair |might |represent |that |year?
A) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2020, |represented |by |
(25, |33.3).
B) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2007, |represented |by |
(12, |33.3).
C) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2012, |represented |by |
(12, |33.3).
D) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2012, |represented |by |
(17, |33.3). |- |CORRECT |ANSWER💢✔It |appears |that |a |third |of |the |world's |population |was |using |the |
internet |by |2012, |represented |by |(17, |33.3).
A |doctor |has |been |reporting |cases |of |the |flu |this |season |for |her |practice |and |reporting |her |data |to |
the |city's |health |department. |The |data |is |depicted |in |the |following |table:
Month |Number |of |People |Infected
10 |16
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answers
The |population |of |a |small |town |is |shown |in |the |following |table:
Year |Population
2000 |7,400
2002 |8,300
2005 |9,000
What |was |the |average |rate |of |change |between |the |years |2000 |and |2005, |and |what |is |an |accurate |
interpretation |of |the |change?
A) |The |average |rate |of |change |was |450 |people |per |year. |The |mayor |can |anticipate |seeing |about |450 |
people |a |year |moving |into |the |town, |based |on |this |data.
B) |The |average |rate |of |change |was |-320 |people |per |year. |The |mayor |can |anticipate |seeing |about |320 |
people |a |year |moving |away |from |the |town, |based |on |this |data.
C) |The |average |rate |of |change |was |320 |people |per |year. |The |mayor |can |anticipate |seeing |about |320 |
people |a |year |moving |into |the |town, |based |on |this |data.
D) |The |average |rate |of |change |was |-500 |people |per |year. |The |mayor |can |anticipate |seeing |about |500 |
people |a |year |moving |away |from |the |town, |based |on |this |data. |- |CORRECT |ANSWER💢✔The |average |
rate |of |change |was |320 |people |per |year. |The |mayor |can |anticipate |seeing |about |320 |people |a |year |
moving |into |the |town, |based |on |this |data.
The |price |of |electricity |per |kilowatt |hour |(kWh) |in |a |certain |city |is |recorded |in |the |following |table: |
Years |Cost |per |kWh
2000 |$0.08
2005 |$0.15
2010 |$0.10
What |is |the |average |rate |of |change |in |electricity |price |from |2005 |to |2010? |What |does |that |mean?
A) |The |average |rate |of |change |is |$0.002 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |increasing |at |$0.002 |per |kWh |every |year |from |2005 |to |2010.
, B) |The |average |rate |of |change |is |−$0.005 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |decreasing |at |$0.005 |per |kWh |every |year |from |2000 |to |2010.
C) |The |average |rate |of |change |is |−$0.01 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |decreasing |at |$0.01 |per |kWh |every |year |from |2005 |to |2010.
D) |The |average |rate |of |change |is |$0.01 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |
been |increasing |at |$0.01 |per |kWh |every |year |from |2005 |to |2010. |- |CORRECT |ANSWER💢✔The |
average |rate |of |change |is |−$0.01 |per |kWh |per |year. |It |implies |that |the |electricity |price |has |been |
decreasing |at |$0.01 |per |kWh |every |year |from |2005 |to |2010.
The |function |f(t) |models |the |percent |of |population |who |use |the |Internet, |where |t |is |the |number |of |
years |since |1995. |During |a |certain |year, |the |rate |of |internet |usage |grew |to |approximately |one-third |of
|the |world |population.
Years |Since |1995 |Percent |of |Worldwide |Population
0 |0.8
5 |6.8
10 |15.8
15 |28.9
20 |43.2
In |about |what |year |did |the |rate |of |internet |usage |grow |to |approximately |one-third |of |the |world |
population, |and |what |coordinate |pair |might |represent |that |year?
A) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2020, |represented |by |
(25, |33.3).
B) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2007, |represented |by |
(12, |33.3).
C) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2012, |represented |by |
(12, |33.3).
D) |It |appears |that |a |third |of |the |world's |population |was |using |the |internet |by |2012, |represented |by |
(17, |33.3). |- |CORRECT |ANSWER💢✔It |appears |that |a |third |of |the |world's |population |was |using |the |
internet |by |2012, |represented |by |(17, |33.3).
A |doctor |has |been |reporting |cases |of |the |flu |this |season |for |her |practice |and |reporting |her |data |to |
the |city's |health |department. |The |data |is |depicted |in |the |following |table:
Month |Number |of |People |Infected
10 |16
