agile algebra semester 1 review -revisedsickles.mysdhc.org/resources/coursereviews/agilealg.pdf ·...

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AGILE ALGEBRA Semester 1 Review 2015-2016 1. A professional magician performs at parties and for the minutes of his performance, the cost of hiring him is shown. Answer the following questions based on the table. The domain is: A. 10 70 B. 50 290 C. $10 $70 D. $50 $290 The range is: A. 10 70 B. 50 290 C. $10 $70 D. $50 $290 The independent variable is: A. Time B. Cost The dependent variable is: A. Time B. Cost 2. At Barney’s Coffee Shop, the barista is shy. She goes into the back coffee room and comes out every 5 minutes with 4 cups of fancy coffee drinks. She does this every 5 minutes for 20 minutes before she goes on break. The cups of coffee are: A. discrete B. continuous 3. Ralph is paying a friend to babysit his little sister so he can go to the movies. The babysitter (his friend) charges $10 per hour. The independent variable is A. dollars B. hours The dependent variable is A. dollars B. hours 4. Determine if each representation is a function. Write YES or NO for each part. _____ 2, 3 , 2, 4 , 0, 3 , 1, 4 _____ { 5, 7 , 6, 0 , 5, 2 , 0, 2 } _____ _____ 5. In a plant nursery, the flower pots were stacked above as shown. How tall would 12 buckets be, in inches? A. 36 inches C. 41 inches B. 40 inches D. 44 inches 6. My tires lose a little bit of air pressure daily, in PSI. If they each began with 32 PSI and lose 0.02 PSI per day, which equation will predict this data where represents the number of days and () represents PSI? A. () = 32 0.02 C. () = 0.02 + 32 B. () = 0.02 + 32 D. () = 0.02 32 time cost 10 min $50 20 min $90 30 min $130 40 min $170 50 min $210 60 min $250 70 min $290 x 2 0 11 1 () 0 3 4 7 2 Buckets 11 in. high 3 Buckets 14 in. high 4 Buckets 17 in. high

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Page 1: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016  1. A  professional  magician  performs  at  parties  and  for  

the  minutes  of  his  performance,  the  cost  of  hiring  him  is  shown.  Answer  the  following  questions  based  on  the  table.  

 The  domain  is:    A.  10 ≤ 𝑡𝑖𝑚𝑒 ≤ 70  B. 50 ≤ 𝑡𝑖𝑚𝑒 ≤ 290  C. $10   ≤ 𝑐𝑜𝑠𝑡 ≤ $70  D. $50 ≤ 𝑐𝑜𝑠𝑡 ≤ $290      The  range  is:    A. 10 ≤ 𝑡𝑖𝑚𝑒 ≤ 70  B. 50 ≤ 𝑡𝑖𝑚𝑒 ≤ 290  C. $10   ≤ 𝑐𝑜𝑠𝑡 ≤ $70  D. $50 ≤ 𝑐𝑜𝑠𝑡 ≤ $290  

   The  independent  variable  is:  

A. Time  B. Cost  

 The  dependent  variable  is:  

A. Time    B. Cost  

 2. At  Barney’s  Coffee  Shop,  the  barista  is  shy.    She  

goes  into  the  back  coffee  room  and  comes  out  every  5  minutes  with  4  cups  of  fancy  coffee  drinks.    She  does  this  every  5  minutes  for  20  minutes  before  she  goes  on  break.  

 The  cups  of  coffee  are:    

    A.  discrete              B.  continuous      3. Ralph  is  paying  a  friend  to  babysit  his  little  sister  so  

he  can  go  to  the  movies.    The  babysitter  (his  friend)  charges  $10  per  hour.    

    The  independent  variable  is         A.  dollars   B.  hours       The  dependent  variable  is         A.  dollars   B.  hours  

 4.  Determine  if  each  representation  is  a  function.  

Write  YES  or  NO  for  each  part.    _____     2, 3 , −2, 4 , 0, 3 , −1, 4    _____    { −5, 7 , 6, 0 , −5, 2 , 0, 2 }    _____        _____  

               5. In  a  plant  nursery,  the  flower  pots  were  stacked  

above  as  shown.                            How  tall  would  12  buckets  be,  in  inches?    

A. 36  inches     C.    41  inches  

B. 40  inches     D.    44  inches  

   6. My  tires  lose  a  little  bit  of  air  pressure  daily,  in  PSI.    

If  they  each  began  with  32  PSI  and  lose  0.02  PSI  per  day,  which  equation  will  predict  this  data  where  𝑥  represents  the  number  of  days  and  𝑓(𝑥)  represents  PSI?  

 A. 𝑓(𝑥) = 32 0.02𝑥   C.    𝑓(𝑥) = 0.02𝑥 + 32  

B. 𝑓(𝑥) = −0.02𝑥 + 32   D.    𝑓(𝑥) = 0.02𝑥 − 32  

   

time cost 10 min $50 20 min $90 30 min $130 40 min $170 50 min $210 60 min $250 70 min $290

x   -­‐2   0   11   1  𝑓(𝑥)   0   3   4   -­‐7  

2 Buckets 11 in. high

3 Buckets 14 in. high

4 Buckets 17 in. high

Page 2: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole  wants  a  cell  phone  that  costs  $70  with  a  

monthly  plan  of  $40  per  month.    Which  is  a  rule  represents  her  plan  where  𝑦  represents  the  cost  and  𝑥  represents  the  number  of  months?  A. 𝑦 = 70𝑥 + 40     C.    𝑦 = 40𝑥 − 70  

B. 𝑦 = 40𝑥 + 70     D.    𝑦 = 40𝑥 + 70𝑥  

 8. Which  function  rule  describes  the  data  in  the  

table?    A.  𝑓 𝑥 = 𝑥 + 1  

B. 𝑓 𝑥 = 𝑥 − 1  

C. 𝑓 𝑥 = 3𝑥 − 1  

D. 𝑓 𝑥 = 3𝑥 + 1  

 9. Tyree  was  rollerblading  in  front  of  a  motion  

detector.    His  movement  is  graphed  below.    Use  the  following  motion  graph  to  answer  the  questions  below.                      

 He  is  walking  toward  the  motion  detector  in  segment(s)  ______________________.    He  is  standing  still  in  segment(s)  _______________.  

 He  is  moving  away  from  the  detector  in  segment(s)____________________.      

 He  changes  direction  between  segment  _________  and  segment  _______.  

 He  is  standing  still  for  ___________  seconds.  

 Segment  A  has  a  rate  of  _________  ft/sec.  

 Segment  B  has  a  rate  of  ________  ft/sec.  

 Segment  C  has  a  rate  of  _________  ft  sec.  

 Segment  D  has  a  rate  of  __________  ft/sec.  

10. Three  joggers  Arnie,  Bernice,  and  Carl  have  their  distance  from  home  graphed  below.    Answer  TRUE  or  FALSE  for  each  question.                              T  or  F:  Arnie’s  graph  is  the  steepest.  

T  or  F:  Carl  is  the  slowest  jogger.  

T  or  F:  Bernice  is  faster  than  Arnie.  

T  or  F:  The  joggers  are  moving  away  from  home.  

 11. Jasmine  kept  track  of  how  many  squirrels  were  in  

her  front  yard  each  week.                            When  was  the  growth  rate  the  greatest?  

Weeks  ________  to  ________.    When  was  the  growth  rate  0?  

Weeks  ________  to  ________.    When  was  the  number  of  squirrels  decreasing?  

Weeks  ________  to  ________.    When  was  the  number  of  squirrels  increasing?  

Weeks  ________  to  ________.    

x f(x) 1 2 2 5 3 8 4 11 5 14

x

y

Arnie Bernice

Carl

Time

Dis

tanc

e fro

m h

ome

Page 3: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016 12.  Melissa  noticed  a  pattern  to  her  texting  while  she  

babysits.    The  table  below  represents  her  data.    

 

 The  texting  can  be  modeled  by  the  equation  𝑇 = 4𝑑.    What  does  the  slope  of  the  equation  represent?  

 A. She  earns  $4  per  text  sent.  B. She  earns  $4  per  hour.  C. She  sends  4  texts  per  hour.  D. She  sends  4  texts  per  dollar  earned.  

 13. Sandra  recorded  her  calories  burned  while  running  

on  the  table  below.    What  is  Sandra’s  rate  of  change?    A. 6  calories/min  

B. 9  calories/min  

C. 10  calories/min  

D. 18  calories/min  

 

14. Diana  is  growing  roses.    The  height  of  her  best  rose  bush  is  recorded  in  the  table  below.    Is  the  height  a  constant  rate  of  change?  

 A. Yes,  the  rate  of  change  is  

3  cm/day  B. Yes,  the  rate  of  change  is  

0.7  cm/day  C. Yes,  the  rate  of  change  is  

1.5  cm/day.  D. No,  the  rate  is  not  

constant.    15.  Jacob  bought  a  balloon  filled  with  helium.    He  

recorded  the  balloon  radius  each  hour.    What  was  the  rate  of  change  of  the  radius?    A.  −2  inches  per  hour  

B. −0.5  inches  per  hour  

C. 0.5  inches  per  hour  

D. 2  inches  per  hour  

16. Araceli  does  not  fill  her  swimming  pool  every  day  and  so  the  water  evaporates  0.9  cm  in  height  each  day.    If  the  pool  water  starts  at  1200  cm  deep,  which  function  rule  represents  the  depth  of  the  water  in  cm  for  ℎ  days?    A. 𝑊 ℎ = 0.9ℎ + 1200  B. 𝑊 ℎ = −0.9ℎ + 1200  C. 𝑊 ℎ = 1200ℎ − 0.9  D. 𝑊 ℎ = 1200ℎ + 0.9  

 17. Three  competitors  are  building  a  sculpture  called  

Lego  Man.    Compare  the  three  competitors’  Lego  Men.        

                               Which  Lego  Man  has  the  greatest  rate  in  feet/hour?    

Lego  Man  #_________    Which  Lego  Man  has  the  lowest  rate  in  feet/hour?    

Lego  Man  #_________      18. Imer  plants  a  tree  and  records  the  growth.    Using  

the  graph  below,  at  what  rate  is  the  tree  growing?      

A.  1  mm  per  week  

B. 50  mm  per  week  

C. 75  mm  per  week  

D. 150  mm  per  week  

Dollars  Earned  (d)  

$8   $10   $11   $12   $15  

#  of  texts  sent  (T)  

32   40   44   48   60  

Time  (min)  

Calories  burned  

0   0  

18   162  

24   216  

30   270  

Day   Height    (cm)  

5   24    7   27    8   28.5    9   30    11   33    

Hour   Radius  (inches)  

5   12    9   10    13   8  17   6  21   4  

Hour   Feet  1   80    2   160  3   240  4   320  5   400  

Lego Man #1 Lego Man #2

Lego Man #3

ℎ = 100𝑡 for 𝑡 hours and ℎ feet

120  feet  per  hour  

Page 4: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016 19. The  graph  above  shows  the  distance  from  the  

shoreline  as  a  turtle  walks  toward  it.    What  is  the  x-­‐intercept  and  what  does  it  represent?    

               

A. (0, 4)  represents  the  turtle  took  4  minutes  to  get  to  shore.  

B.   0, 6  represents  the  number  of  feet  the  turtle  walked.  

C. (4, 0)  represents  the  turtle  arriving  at  the  shore.  

D. (6, 0)  represents  the  turtle  arriving  at  the  shore.  

 20. What  is  the  equation  that  represents  the  graph  

below?    A.  𝑦 = − !

!𝑥 + 6  

B. 𝑦 = − !!𝑥 + 6  

C. 𝑦 = − !!𝑥 + 8  

D. 𝑦 = − !!𝑥 + 8  

 21. What  is  the  graph  of  the  equation  below?  

    6𝑥 − 2𝑦 = 4    

A.         B.      

           C.             D.            

   

22. What  is  the  equation  of  a  line  parallel  to  the  graph  of    𝑓(𝑥) = − !

!𝑥 + 8?  

 A.  𝑓(𝑥) = !

!𝑥 − 1     C.    𝑓(𝑥) = 3𝑥 − 1  

B. 𝑓(𝑥) = − !!𝑥 + 7   D.    𝑓(𝑥) = −3𝑥 + 4  

 

23.  What  is  the  equation  of  a  line  perpendicular  to  the  

graph  of  𝑦 = −7𝑥 − 4?  

 A.  𝑦 = −7𝑥 + 5     C.    𝑦 = !

!𝑥 + 5  

B. 𝑦 = 7𝑥 + 5     D.    𝑦 = − !!𝑥 + 5  

 

24. Which  of  the  following  describes  the  graph  𝑦 = 2?  

A. A  horizontal  line  with  an  undefined  slope.    B. A  vertical  line  with  an  undefined  slope.    C. A  horizontal  line  with  zero  slope.  D. A  vertical  line  with  zero  slope.    

 25.  Which  of  the  following  describes  the  graph  𝑥 = 4?  

A. A  horizontal  line  with  an  undefined  slope.    B. A  vertical  line  with  an  undefined  slope.    C. A  horizontal  line  with  zero  slope.      D. A  vertical  line  with  zero  slope.  

 

26.  What  is  the  x-­‐intercept  of  the  linear  function?  

5𝑥 − 6𝑦 = 30    A.  −6     C.    5  

B. −5     D.    6  

 

27.  What  is  the  y-­‐intercept  of  the  linear  function?  

2𝑥 − 𝑦 = −10    

A.  −10     C.    5    

B. −5     D.    10  

 

Page 5: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016 28. What  is  the  equation  of  a  line  that  has  a  slope  

of  3  and  passes  through  the  point  (−2, 5)?    A.  𝑦 = 3𝑥 − 17     C.    𝑦 = 3𝑥 + 7  

B. 𝑦 = 3𝑥 + 1     D.    𝑦 = 3𝑥 + 11  

 

29. What  is  the  equation  of  the  line  that  passes  through  the  points   2, 4  and  (3, 9)?    

A. 𝑦 = 5𝑥 − 6         C.    𝑦 = 5𝑥 − 18  

B. 𝑦 = 5𝑥 − 14     D.    𝑦 = 5𝑥 − 22  

 

30. Which  inequality  represents  the  graph  below?    A. 𝑦 > 𝑥 − 3  

B. 𝑦 > 3 − 𝑥  

C. 𝑦 < 𝑥 − 3  

D. 𝑦 < 3 − 𝑥  

 

31. What  is  the  graph  of  the  inequality  below?    

𝑦 ≥ −2𝑥 + 3    

 A.         C.      

 

 

 

B.           D.      

 

 

 

 

32. Solve:    2𝑥 + 5 = 15  

 A. 𝑥 = 2     C.    𝑥 = 10  

B. 𝑥 = 5     D.    𝑥 = 20  

 

33. Solve:    5 3𝑥 − 4 − 3 = 6𝑥 + 7  

 A.  𝑥 = !

!"   C.    𝑥 = !

!"  

B. 𝑥 = !"!     D.    𝑥 = !"

!  

 

34.  Solve:    3 5𝑥 − 10 = 3 𝑥 + 4  

 A.  !

!     C.      − !

!  

B. !!!     D.    !

!  

 

35.  Solve  for  𝑥.        𝑃 = 𝑥 − 𝑦𝑧    

A.  𝑥 = 𝑃 − 𝑦𝑧  

B. 𝑥 = 𝑃 + 𝑦𝑧  

C. 𝑥 = !!"  

D. 𝑥 = 𝑃 + 𝑦 + 𝑧  

 

36. The  volume  of  a  cone  is  𝑉 = !!𝐵ℎ  ,  where  𝐵  

represents  the  area  of  the  base.    What  is  the  formula  for  the  height,  ℎ,  of  the  cone?  

 A. ℎ = 3𝑣 − 𝐵     C.    ℎ = !

!!  

B. ℎ = !!!       D.    ℎ = 3𝐵𝑣  

 37. Solve:    𝑥 < 4𝑥 − 12  

 A. 𝑥 < −4     C.    𝑥 < 4  

B. 𝑥 > −4     D.    𝑥 > 4  

 

Page 6: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016 38. Solve:    7𝑥 − 20 ≥ −160  

 A. 𝑥 ≤ −20   C.    𝑥 ≥ −20  

B. 𝑥 ≤ 20   D.    𝑥 ≥ 20  

 39. Solve:    −3𝑥 + 6 > 10 + 𝑥  

     

           40. Solve:    −10 < 3𝑥 − 1 ≤ 5  

 A. −3 < 𝑥 ≤ 2     C.    2 < 𝑥 ≤ 3  

B. −9 < 𝑥 ≤ 6     D.    6 < 𝑥 ≤ 9  

 41.  Match  the  following  absolute  value  functions  with  

each  its  corresponding  graph.    

A. 𝑓 𝑥 = |𝑥 − 3|  

B. 𝑓 𝑥 = |𝑥 + 3|  

C. 𝑓 𝑥 = |𝑥|  − 3  

D. 𝑓 𝑥 = 𝑥 + 3  

 

   

   

   

Use  the  following  situation  to  answer  questions  42-­‐43      Mobile  Express  Gaming  charges  a  $15  registration  fee  plus  $2.50  per  game  downloaded.  Let  g  be  the  number  of  games  downloaded.      42. Write  a  function  that  models  the  money  spent  on  

downloading  games  to  you  phone  using  function  notation.          

 43. Graph  the  function  for  the  first  5  games  

downloaded.      

       

 

44. The  cost  to  manufacture  x  pairs  of  shoes  can  be  represented  by  the  function  𝐶 𝑥 = 63𝑥.  Explain  what  is  meant  by  𝐶 6 = 378.      

                             

Page 7: Agile Algebra Semester 1 Review -Revisedsickles.mysdhc.org/Resources/CourseReviews/AgileAlg.pdf · AGILE ALGEBRA Semester 1 Review 2015-2016 7. Nicole!wants!a!cell!phone!that!costs!$70!with!a!

AGILE ALGEBRA Semester 1 Review 2015-2016 45. A  survey  was  taken  at  a  grocery  store  to  compare  

vegetable  choice  among  women.        

     What  percentage  of  women  surveyed  prefer  frozen  vegetables?        

A. 50%     C.    61%  B. 39%     D.    25%  

   

 46. The  dotplot  shows  ages  of  the  math  teachers  at  a  

local  school.        

   How  many  teachers  are  older  than  37?  A. 4  teachers     C.    6  teachers    B. 5  teachers     D.    7  teachers  

     47. A  survey  was  taken  at  a  local  school  to  ask  

students  how  many  hours  they  watch  television  per  week.    Draw  a  box  and  whisker  plot  to  represent  the  data  collected.    

{0, 3, 5, 10, 11, 12, 12, 13, 15, 16, 20}              

48. Match  each  graph  with  its  description.    

  Fresh  Vegetables  

Frozen  Vegetables  

TOTAL  

Women  under  30yrs  

25   25   50  

Women  over  30yrs  

14   36   50  

TOTAL   39   61   100  

20                          30                          40                            50                          60  

Graph  A  _______  

Graph  B      _______  

Graph  C  ________  

A.    Weak  Positive                  Correlation    B.  Strong  Positive                Correlation    C.  Weak  Negative                Correlation    D.  Strong  Negative                  Correlation