Ch 1 Lesson 4

Fun Center rents popcorn machines for $20 per hour. In addition to the hourly charge, there is a rental fee of $32.

Is the number of hours you rent the popcorn machine proportional to the total cost?

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CCSS.7.RP.A.2A

Mrs. Govin is making cakes for the school bake sale. She needs 2 cups of sugar for every cake she makes.

Is the number of cakes Mrs. Govin makes proportional to the number of cups of sugar?

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CCSS.7.RP.A.2A

At a local music store, CDs cost $11.99 including tax.

Is the number of CDs purchased proportional to the cost of the CDs?

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CCSS.7.RP.A.2A

Jean has $280 in her savings account. Starting next week, she will deposit $30 in her account every week.

Is the amount of money in her account proportional to the number of weeks?

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CCSS.7.RP.A.2A

The world’s fastest fish, a sailfish, swims at a rate of 69 miles per hour. Is the distance a sailfish swims proportional to the number of hours it swims? Explain.

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CCSS.7.RP.A.2A

In July, a paleontologist found 368 fossils at a dig. In August, she found about 14 fossils per day.

Is the number of fossils the paleontologist found in August proportional to the number of days she spent looking for fossils that month?

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CCSS.7.RP.A.2A

A touchdown is worth 6 points. Additionally you score an extra point if you can kick a field goal. Is the total number of points scored proportional to the number of touchdowns?

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CCSS.7.RP.A.2A

An outdoor swimming pool costs $8 per day to visit during the summer. There is also a $25 yearly registration fee. Is the total cost proportional to the total number of days visited?

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CCSS.7.RP.A.2A

At a certain middle school, there are 26 students per teacher in every homeroom. Is the total number of students proportional to the number of teachers?

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CCSS.7.RP.A.2A

A baseball club has 18 players for every team, with the exception of four teams that have 19 players each. Is the number of players proportional to the number of teams?

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CCSS.7.RP.A.2A