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7 April, 01:20

Your classmate is starting a new fitness program. He is planning to ride his bicycle 30 minutes every day. He burns 7 calories per minute bicycling at 11 mph and 10.75 calories per minute bicycling at 15 mph. How long should he bicycle at each speed to burn 300 calories?

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  1. 7 April, 04:59
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    Set your equations up algebraically.

    At 11mph: 43 minutes to burn 300 calories

    At 15mph: 28 minutes to burn 300 calories
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