Mathematics

8th

grade

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01 Finding Rates of Change

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20 questions

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  • 1. Multiple Choice
    15 minutes
    1 pt
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    A climber is scaling a rock face. Two hours after starting his climb, he is at an altitude of 400 feet. After six hours, he is at an altitude of 700 feet. What is his average rate of change?

    200 ft/hr

    150 ft/hr

    300 ft/hr

    75 ft/hr

  • 2. Multiple Choice
    15 minutes
    1 pt
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    A balloon was 10 feet off the ground when it was the child who was holding it let it go. 5 seconds after that, the balloon was 20 feet off the ground. What was the balloon's rate of ascent?

    10 feet per second

    5 feet per second

    2 feet per second

    6 feet per second

  • 3. Multiple Choice
    15 minutes
    1 pt
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    Craig earns extra money working as a lifeguard. He earned $37 after working for 4 hours and $64.75 after working for 7 hours. What was Craig's wage?

    $37/hr

    $64.75/hr

    $9.25/hr

    $18.50/hr

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