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Mathematics, 20.09.2019 19:30 ashleyzamarripa08

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true?
a-it is the difference between the initial amount and the percent decrease.
b-it is the difference between the initial amount and the decay factor after w weeks.
c-it is the initial amount raised to the decay factor after w weeks.
d-it is the product of the initial amount and the decay factor after w weeks.

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Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases...

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