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Online Update 1/13/12 7th/8th grade Do your best….Ask questions….Use your time wisely 
Lesson 6-4
Writing Expressions and Equations
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1. Write 7 more than w is 25 as an algebraic equation.
A.
C.
7 = 25 + w
w + 7 = 25
B.
D.
w – 7 = 25
7w = 25
Hint
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2. Write 5 less than twice the length equals 11 as an algebraic equation.
A.
C.
2 - 5 = 11
5 < 2 + 11
B.
D.
- 5 = 11
2 ÷ 5 = 11
Hint
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3. Write an algebraic expression for the phrase 17 more than r.
A.
C.
17 > r
r + 17
B.
D.
17r
r - 17
Hint
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4. For membership to a certain labor union, it costs $150 to join and $28 per
month of membership. You want to become part of the labor union and you
still need to join. Write an equation to figure out how many months it will be
before the total cost is $290.
A.
150 = 290 + 28m
B.
290 = 150m + 28
C.
28 + 290m = 150
D.
150 + 28m = 290
Hint
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5. Which situation could be represented by 12 – c = 4?
A.
B.
C.
D.
Conner is 4 years older than his 12-year-old brother.
Conner’s age minus 12 is 4.
The difference of Conner’s age and 4 is 12.
Conner is 4 years younger than his 12-year-old brother.
Lesson 6-5
Inequalities
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1. Write the inequality that is graphed on the number line below.
A.
B.
C.
D.
Hint
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2. Write an inequality for the sentence three times a number is less than 45.
3 + x < 45
A.
3x > 45
B.
C.
3x
45
3x < 45
D.
Hint
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3. Which graph represents the solution to x + 4 > -2?
A.
B.
C.
D.
Hint
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4. Solve 3r + 5 > 26.
r>7
A.
B.
r > 21
C.
D.
Hint
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5. Write an inequality for the sentence 8 minus 3 times a number is greater than
or equal to 2.
3 - 8t
2
A.
8 – 3t
2
8t - 3
2
B.
C.
3t - 8
2
D.
Lesson 6-6
Functions and Graphs
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1. Which pair of quantities are most likely to be related as a function?
A.
C.
length of hair and age
length of phone call and cost
of phone call
B.
D.
month of birth and height
color of car and gas
mileage
Hint
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2. The chart shows the number of sides of a regular polygon and the measure of
an exterior angle. How are the two quantities related?
A.
C.
Hint
Angle measure is a multiple of
the number of sides.
As the number of sides
increase, angle measure
decreases.
B.
D.
As the number of sides
increase, angle measure
increases.
There is no relationship.
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3. The table shows the pressure at various depths below the surface of a lake.
What is the relationship between pressure and depth?
A.
Pressure increases as depth
increases.
B.
Pressure and depth are
equal.
C.
There is no relationship
between pressure and depth.
D.
Pressure decreases as
depth increases.
Hint
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4. Alejandro owns his own accounting firm. The chart shows how much his
business was worth at different periods after it was founded. Describe the
trend in the net worth of Alejandro's firm.
A.
Alejandro's firm is remaining
at a constant value.
B.
Alejandro's firm is
decreasing in value every
year.
C.
There is no relation between
time and the net worth of
Alejandro's firm.
D.
Alejandro's firm is
becoming more valuable
every year.
Hint
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5. A certain company has performed a study to see how long a certain project
took to complete on average with different numbers of people working on it.
The results are below. How is the time required related to the number of
people on the project?
A.
C.
The amount of time needed
increases as more people work
on the project.
The amount of time needed
remains constant.
B.
D.
There is no correlation
between the amount of
time needed for a project
and the number of people
working on it.
The amount of time
needed decreases as more
people work on the
project.
Lesson 6-7
Functions and Equations
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1. The table below lists four solutions of y = 3x – 2.Find the missing value.
A.
C.
–5
–1
B.
D.
–4
–2
Hint
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Write an equation for the second number is 3 times the first. Let x represent
2. the first number and let y represent the second number.
A.
C.
xy = 3
y = 3x
B.
D.
x = 3y
y=x+3
Hint
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3. Write an equation that relates the following ordered pairs.
A.
C.
y=x–3
x=y–3
Hint
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4. Choose the equation for the graph below.
B.
D.
y=x+3
y=x–5
A. y =
C.
y = 2x +2
B. y =
x-1
D. y =
x+1
Hint
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5. Choose the equation for the graph below.
A.
C.
y = 2x - 2
y = 4x - 2
B.
D.
y = 3x - 3
y=x-3
Estimating with Fractions
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1. Estimate . 1/3 x 17
A.
C.
17
11
B.
D.
2
6
Hint
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2. Estimate . 3 ¼ times 9 2/7
A.
27
B.
30
C.
36
D.
40
Hint
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3.
Round 3
A.
C.
to the nearest whole number.
0
B.
4
D.
3
2
Hint
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4.
Estimate
A.
C.
× 21.
16
28
B.
D.
15
11
Hint
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5.
If a batch of cookies takes
of an hour to prepare and bake, about how
many batches of cookies can be prepared and baked in three hours?
A.
C.
10
12
B.
D.
15
13
Lesson 7-2
Adding and Subtracting Fractions
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1. Solve . 2/9 + 1/2Write the solution in simplest form.
A.
B.
C.
D.
Hint
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2. Solve . 5/8 + ¾ Write the solution in simplest form.
A.
B.
C.
D.
Hint
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3. The circle graph below shows the results of a survey of students'favorite
types of pizza at Longview Middle School. What fraction of students prefer
either cheese or vegetarian pizza?
A.
B.
C.
D.
Hint
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4.
Find
A.
–
. Write the difference in simplest form.
B.
C.
D.
Hint
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5.
Evaluate
+ f if f =
.
A.
B.
C.
D.
Lesson 7-3
Adding and Subtracting Mixed Numbers
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1. Find the missing value. -3x = -54
18
A.
15
B.
16
C.
14
D.
Hint
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2. Find 2 7/10 + 5 3/4
A.
B.
C.
D.
Hint
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3.
Solve y =
+
+
A.
B.
C.
D.
Hint
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4.
Find
–
.
A.
B.
C.
D.
Hint
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5.
Solve d =
–
+
.
A.
B.
C.
D.