Question

Has anyone done Exponential Growth and Decay (in mathematical models with application A) on sos or odysseware and gotten a prefect score?? Pls help!
I need help on the whole assignmnet but particularly this question..

Answer 1

Answer:

1) 62.5

2) 50

3) 75

4) 100

Step-by-step explanation:

1)

Because it has a half-life of 25 days, half of it will decay after 25 days.

After $25*4=100$ days, there will be $(1/2)^{4}=1/2^{4}=1/16$ of it left.

So, $1000/16=\boxed{62.5}$.

2)

Because it has a half-life of 25 days, half of it will decay after 25 days.

After $25*3=75$ days, there will be $(1/2)^{3}=1/2^{3}=1/8$ of it left.

So, $400/8=\boxed{50}$

3)

Because it has a half-life of 25 days, half of it will decay after 25 days.

After $25*2=50$ days, there will be $(1/2)^2=1/2^{2}=1/4$ of it left.

So, $300/4=\boxed{75}$.

4)

The only answer left is $\boxed{100}$ grams. You can solve it the same way you solved the previous steps.