Unit 3 Test Form A

by Christine Godfrey

| 21 QuestionsNote 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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