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Knihovna

Unit 3 Test Form B - Retake

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Poslední aktualizace about 7 years ago
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Ready Math - Expression and Equations

1

A company sells speakers for $23 each. At the end of the week, they have sold $851 worth of speakers. How many speakers did they sell? Write and solve an equation to find the answer.

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2.5

Donna opens a savings account with an initial balance of $50. She then deposits $25 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 Donna opened the account, m.

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Otázka 5
5.

Part A)

Use the equation a=25m+50 to explain how the value of a changes as m increases.

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4.5
1

Brandon wants to practice his trombone for at least 5.5 hours this week.

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Otázka 9
9.

Part A

Write an inequality to represent the number of hours Brandon will spend practicing this week. Use the variable x.

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2.5

Consider the possible solution to each inequality. Choose Yes or No for each question.

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0.5
0.5
0.5
0.5
2

Jen accidently knocks a square framed poster off the wall, breaking the protective glass piece. The glass piece has side length x and she needs to buy a new piece of glass to replace the it.

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Otázka 1
1.

What is the constant in the following expression?

Otázka 2
2.

Write an equation to represent the situation. Use the variable x.

Otázka 3
3.

The company sold _____ speakers.

Otázka 4
4.

If each equation below was solved for x, for which equation is x = 6 the solution?

Choose all that apply.

Otázka 6
6.

Part B)

Make a table to show the relationship between m and a. Find at least 5 ordered pairs. Given the equation a = 25m + 50.

Otázka 7
7.

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

Otázka 8
8.

Which value makes the equation 4x - 5 = 43 true?

Otázka 10
10.

Part B

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

Otázka 11
11.

Which expression is equivalent to 45x - 15x?

Choose all that apply.

Otázka 12
12.

Is 8.3 a solution of

Otázka 13
13.

Is 6.5 a solution of

Otázka 14
14.

IS 7 a solution of

Otázka 15
15.

Is 17 a solution of

Otázka 16
16.

Is 6 a solution of

Otázka 17
17.

Evaluate:

Otázka 18
18.

Part A

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

Otázka 19
19.

Part B

If the protective glass piece is 25 inches wide, what is the area of the glass piece Jen needs to replace?

Otázka 20
20.

Part C

If Jen has a budget of $150, what is the most she can pay per square inch of glass to replace the glass piece described in Part B?

Otázka 21
21.

Explain your answer to #20. (Use mathematical reasoning.)