This is totally not math but I think your phone or device has crashed
Answer:
Where b is the decay rate for this case. Using the condition given we have:



And our model would be given by:

And replacing the value of t=15 we got:

Step-by-step explanation:
For this case since the half life is 6 hours we have the following condition:

Where
is the initial amount
Our model for this case is given by this expression:
Where b is the decay rate for this case. Using the condition given we have:

And solving for b we got:

And solving for b we got:

And our model would be given by:

And replacing the value of t=15 we got:

Answer:
Step-by-step explanation:
-0.45 , -4/9 , 0.4 in that order.
Answer:
x= −a+5t
Step-by-step explanation: