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 ≤ 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
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
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
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
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
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.
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