7.AF.3 Ilearn Item Specification

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An auditorium sets up chairs for a concert.

There are 250 chairs already set up. The crew sets up 75 chairs per hour. A total of 550 chairs are needed for the concert.

Which equation can be used to determine h, the number of hours it will take to set up the total number of chairs?

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A class has 8 boys and x girls. Each student has 4 pencils. The total number of pencils the students have is 52.

Part A

Create an equation that models this situation.

Mathematical Equivalence

ON

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A class has 8 boys and x girls. Each student has 4 pencils. The total number of pencils the students have is 52.

Part B How many girls are in the class?

Mathematical Equivalence

ON

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A baker needs flour to make bread and cookies.

He uses 3 cups of flour for the bread. He needs 1 ½ cups of flour for each batch of cookies. He uses a total of 12 cups of flour.

Part A Create an equation that models the situation with x representing the number of batches of cookies the baker can make.

Mathematical Equivalence

ON

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A baker needs flour to make bread and cookies.

He uses 3 cups of flour for the bread.

He needs 1 ½ cups of flour for each batch of cookies.

He uses a total of 12 cups of flour.

Part B How many batches of cookies can the baker make?

Mathematical Equivalence

ON

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A shopper purchased 5 red shirts and x blue shirts. Each shirt costs $9.50. The total cost for the shirts is $76.00.

Select the two equations which could be used to determine x, the number of blue shirts the shopper purchased.

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A linear equation is given. 3(x - 2) = 9 Two students solve the equation in different ways. Compare the two methods used to solve the equation. Click on each blank box and select an option to complete each sentence.

The two methods result in the ​ (a)   solutions. Student A solved the equation ​ (b)   .

Student B solved the equation ​ (c)   . The methods are the same because they both ​ (d)   .

• same
• different
• correctly
• incorrectly
• divided both sides by 3
• added 6
• added 2
• distributed a number

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