Mathematics: Virginia starts with 200 milligrams of a radioactive substance. the amount of the substance decreases by 25% each week for a number of weeks, w. the expression 200(1−0.25)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a: it is the product of the initial amount and the decay factor after w weeks. b: it is the difference between the initial amount and the percent decrease. c: it is the difference between the initial amount and the

Virginia starts with 200 milligrams of a radioactive

QueenNerdy889

10.03.2022

option 'A' is correct.

Step-by-step explanation:

Since we have given that

Quantity of radioactive substance = 200 milligrams

Rate of decay = 25%

Number of weeks = w

As we know the formula for "Compound Interest ":

$A=P(1-\frac{r}{100})^w\\\\A=200(1-0.25)^w$

So, here , P=200 milligrams i.e. the initial amount

So, It is the product of the initial amount and the decay factor after w weeks.

Hence, option 'A' is correct.

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melanieambrosy

28.05.2020

It is the product of the initial amount and the decay factor after weeks.

Step-by-step explanation:

im, ttm

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mkn3347

24.03.2021

Maybe your internet is not working or you have a bug

Step-by-step explanation:

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