C957 Unit 3 Module 3 Exam with Questions
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and Correct Answers 2025
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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
11 ,22
12 ,30
An ,analyst ,in ,the ,health ,department ,determines ,the ,average ,rate ,of ,change ,between
,months ,10 ,and ,12 ,to ,be ,7. ,
What ,does ,this ,mean?
A) ,Approximately ,7 ,people ,have ,been ,infected.
B) ,Approximately ,7 ,times ,more ,people ,have ,been ,infected ,this ,year, ,compared ,to ,the
,previous ,year
, , , , , , ,
and Correct Answers 2025
, , , ,
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
11 ,22
12 ,30
An ,analyst ,in ,the ,health ,department ,determines ,the ,average ,rate ,of ,change ,between
,months ,10 ,and ,12 ,to ,be ,7. ,
What ,does ,this ,mean?
A) ,Approximately ,7 ,people ,have ,been ,infected.
B) ,Approximately ,7 ,times ,more ,people ,have ,been ,infected ,this ,year, ,compared ,to ,the
,previous ,year
