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Biblioteka

Unit 3 Test Form A

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Posljednje ažuriranje about 7 years ago
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Expressions and Equations

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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.

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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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Sean wants to practice his soccer skills for at least 2.5 hours this week.

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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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Pitanje 1
1.

What is the constant in the following expression?

Pitanje 2
2.

Write the equation for how many earbuds they sold.

Pitanje 3
3.

Fill in the blank: The company sold ________ ear buds.

Pitanje 4
4.

If each equation below is solved for x, for which equation is x=8 the solution?

Choose all that apply.

Pitanje 5
5.

Part A)

Use the following equation to explain how the value of a changes as m increases.

Pitanje 6
6.

Part B)

Make a table to show the relationship between m and a. Find at least 5 ordered pairs.

Pitanje 7
7.

Part C)

Use your table from Part B to draw a graph to represent the situation.

Pitanje 8
8.

Which value makes the following equation true?

Pitanje 9
9.

Part A)

Write an inequality to represent the number of hours Sean will spend practicing this week.

Pitanje 10
10.

Part B)

Graph the solution to your inequality from Part A on the number line below.

Pitanje 11
11.

Which expression is equivalent to the following equation?

Choose all that apply.

Pitanje 12
12.

Is 8 a solution of

Pitanje 13
13.

Is 2 a solution of

Pitanje 14
14.

Is 4.6 a solution of

Pitanje 15
15.

Is 3.9 a solution of

Pitanje 16
16.

Is 5 a solution of

Pitanje 17
17.

Evaluate:

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Pitanje 18
18.

Part A)

Write a variable expression for the area of the glass piece Stephanie needs to replace.

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Pitanje 19
19.

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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Pitanje 21
21.

Explain your answer to #20 above.

Pitanje 20
20.

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?