Unit 3 Test Form A
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by Christine Godfrey
| 21 Questions
Note from the author:
Expressions and Equations
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1
1
What is the constant in the following expression?

8
5
7
6
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A company sells ear buds for \$17 each. At the end of the week, they have sold \$731 worth of ear buds. How many ear buds did they sell? Write and solve an equation to find the answer.
2
1
Write the equation for how many earbuds they sold.
3
1
Fill in the blank: The company sold ________ ear buds.
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4
1
If each equation below is solved for x, for which equation is x=8 the solution?
Choose all that apply.

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Leanna opens a savings account with an initial balance of \$100. She then deposits \$50 each month. Use an equation, a table, and a graph to explain the relationship between the amount of money in the account, a, and the number of months since Leanna opened the account, m.
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5
1
Part A)
Use the following equation to explain how the value of a changes as m increases.

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6
1
Part B)
Make a table to show the relationship between m and a. Find at least 5 ordered pairs.
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7
1
Part C)
Use your table from Part B to draw a graph to represent the situation.
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8
1
Which value makes the following equation true?

10
12
14
16
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Sean wants to practice his soccer skills for at least 2.5 hours this week.
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9
1
Part A)
Write an inequality to represent the number of hours Sean will spend practicing this week.
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10
1
Part B)
Graph the solution to your inequality from Part A on the number line below.
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11
1
Which expression is equivalent to the following equation?
Choose all that apply.

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For #12- #16: Consider the possible solution to each inequality. Choose Yes or No for each question.
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12
1
Is 8 a solution of

Yes
No
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13
1
Is 2 a solution of

Yes
No
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14
1
Is 4.6 a solution of

Yes
No
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15
1
Is 3.9 a solution of

Yes
No
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16
1
Is 5 a solution of

Yes
No
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17
1
Evaluate:

a
18
c
19
e
20
21
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18
1
Part A)
Write a variable expression for the area of the glass piece Stephanie needs to replace.
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19
1
Part B) If the window is 20 inches wide, what is the area of the glass piece Stephanie needs to replace?
Area of Glass: ______________ square inches
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20
1
Part C)
If Stephanie has a budget of \$100, what is the most she can pay per square inch of glass to replace the window discribed in Part B?
21
1
Explain your answer to #20 above.

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