Transcript Unit 2 Review - Cobb Learning

Warm-up
You can work a total of no more then 41 hours each
week at your two jobs. Housecleaning pays $5 per
hour and your sales job pays $8 per hour. You need to
earn at least $254 each week to pay your bills. Write
a system of inequalities that shows the various numbers
of hours you can work at each job.
x = housecleaning
y = sales job
Hours:
x + y ≤ 41
Money:
5x + 8y ≥ 254
Questions over WS/HW
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1. A printing company will charge $6 plus $0.07 per
page. Another company will charge $24 plus $0.04
per page for the same project. For how many pages
will the costs be the same regardless of which
company is used?
A. 330
B. 400
C. 600
D. 1000
2. Solve by elimination.
2 x  3 y  14
3x  3 y  9
A. (1, 2)
B. (-1, 4)
C. (1, -4)
D. (-1, 2)
3. Joe spent $7.75 to purchase 23 snacks
the club meeting. Chips are $0.25 and pretzels are
$0.50. How many of each type of snack did Joe buy?
A.8 chips, 15 pretzels
B.15 chips, 8 pretzels
C.11 chips, 12 pretzels
D.12 chips, 11 pretzels
4. How many solutions does the systems have?
y  2x 1
4 x  2 y  2
A. None
B. Exactly One
C. Exactly Two
D. Infinitely Many
5. The solution of which linear inequality is graphed
below?
A. y < -x
B. y > -x
C. y ≤ -x
D. y ≥ - x
6. Tickets to the carnival cost $9.00 for adults and
$7.50 for children. A group of 11 people went to the
carnival and paid $87 for tickets. How many adult
tickets were purchased? How many children’s tickets
were purchased?
A. 3 adult’s tickets, 8 children’s tickets
B. 8 adult’s tickets, 3 children’s tickets
C. 5 adult’s tickets, 6 children’s tickets
D. Can’t be determined from the given
information
7. Which system of inequalities is represented by the
graph?
A.
B.
C.
D.
8. The ordered pair (-6, 2) is a solution of which
system of equations?
4x  3y  7
A. x  y  4
2 x  3 y  18
C. x  y  8
10 x  13 y  34
B. 15 x  17 y  56
D.
x  y  10
x  y  8
9. The equations 5x + 2y = 48 and 3x + 2y = 32
represent the money collected from school concert
ticket sales during two class periods. If x represents
the cost for each adult ticket and y represents the cost
for each student ticket, what is the cost for each adult
ticket?
A. $20
B. $10
C. $8
D. $4
10. Which property is shown below?
9  2  12  9   2  12
A. Commutative property of multiplication
B. Associative property of multiplication
C. Multiplication property of equality
D. Identity property of multiplication
11. Which pair is NOT a solution of the system of
inequalities?
3x  2 y  2
x y 3
A. (0, 0)
B. (-1, 2)
C. (4, 1)
D. (2, 2)
12. Which system of inequalities is represented by the
graph?
A.
B.
C.
D.
Results…
How well did you do?
Homework
• Review WS/HW
• STUDY!