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Mathematics, 25.02.2020 03:31, milkshakegrande101
A radioactive substance decays at a continuous rate of 17% per year, and 250 mg of the substance is present in the year 2009.
(a) Write a formula for the amount present, A (in mg), years after 2009.
(b) How many milligrams will be present in the year 2023? Round your answer to three decimal places. In the year 2023 the amount of the substance is +23.1
(c) Estimate when the quantity drops below 25 mg. Round your answer to the nearest integer. mg The quantity drops below 25 mg in the year
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