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March 30, 2017

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1). In 1968, vehicle emision standards allowed 6.3 hydrocarbons released per mile driven. By 1980, the standards allowed only 0.41 hydrocarbons per mile driven. What was the rate of change from 1968 to 1980?

  • Math - ,

    (6.3 - 0.41) / 6.3 =

    Convert the decimal answer to a percent.

  • Math - ,

    Thank you! Would it be...
    0.93?

  • Math - ,

    Yes -- if you change the decimal to a percent.

    0.93 = 93% decrease

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