Mathematics, 27.02.2020 20:07 kell22wolf

Eric starts with 10 milligrams of a radioactive substance. The amount of the substance
decreas
ch week for a number of weeks, w. He writes the expression
find the amount of radioactive substance remaining after w weeks.
Andrea starts with 1 milligram of a radioactive substance. The amount of the substance
decreases by 20% each week for a number of weeks, w. She writes the expression
(1 -0.2)" to find the amount of radioactive substance remaining after w weeks.
Use the drop-down menus to explain what each part of Eric's and Andrea's
expressions mean.

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Eric starts with 10 milligrams of a radioactive substance. The amount of the substance
decreas...

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