Answer:

Step-by-step explanation:
Given the exponential decay function 
When
then

so the initial amount is 
The exponential decay function
has the decay factor 
In your case, the eexponential decay factor is 
This would be SAS. If that’s wrong I’m sorry but it’s the only thing that makes sense, the dashes indicate they are the same and then the circle at the point also indicates that they’re the same so you have two sides and one angle that are the same, so it should be SAS.
Answer:
64
Step-by-step explanation: