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    Intepreting Data and Piecewise Functions

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    A factory begins emitting particulate matter into the atmosphere at 8 am each workday, with the emissions continuing until 4 pm. The level of pollutants, P(t), measured by a monitoring station 1/2 mile away is approximated as follows, where t represents the number of hours since 8 am:

    p(t)= 75t + 100 if 0 is less than or equal to t and less than or equal to 4
    400 if 4 is less than t or less than 8
    -100t + 1200 if 8 is less than or equal to t or less than or equal to 10
    -50/7t + 100/7 if 10 is less than t or less than 24

    Find the level of pollution at
    a. 9am
    b.11am
    c. 5pm
    d. 7pm
    e. midnight
    f.Graph y = P(t)
    g. From the graph in part f., at what time(s) is the pollution level highest? Lowest?

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    https://brainmass.com/math/graphs-and-functions/intepreting-data-piecewise-functions-157148

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    A factory begins emitting particulate matter into the atmosphere at 8 am each workday, with the emissions continuing until 4 pm. The level of pollutants, P(t), measured by a monitoring station ½ mile away is approximated as follows, where t represents the number of hours since 8 am:

    ...

    Solution Summary

    A piecewise function is evaluated for different values of t. The solution is detailed and well presented.

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