Unit 4 - Lesson 9 - Grade 8: Illustrative Mathematics
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Algebra I, Algebra II, Geometry, Math
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11 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
If you were babysitting, would you ratherCharge $5 for the first hour and $8 for each additional hour?OrCharge $15 for the first hour and $6 for each additional hour?Explain your reasoning.
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Describe what is happening in each tank. Either draw a picture, say it verbally, or write a few sentences.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Use the table to estimate when the tanks will have the same amount of water.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
The amount of water (in liters) in tank 1 after t minutes is 30t + 25 . The amount of water (in liters) in tank 2 after t minutes is -20t + 1000. Find the time when the amount of water will be equal.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the height of each elevator at this time?
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
How long would it take each elevator to reach ground level at this time?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
If the two elevators travel toward one another, at what height do they pass each other?
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