Mathematics, 05.05.2020 02:08 Celsie

A radioactive substance decays according to the equation y=30( .88 )^x, where y is measured in grams of the radioactive substance and x is years. In how many years will there be about half of the original amount left of this radioactive substance?

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A radioactive substance decays according to the equation y=30( .88 )^x, where y is measured in grams...