Answer:
proportional relationship
Step-by-step explanation:
its proportional because it crosses through the axis :3
I dont understand what yopu typed out.
Answer:

Step-by-step explanation:
The amount of the isotope after t seconds is given by the following exponential equation:

In which Q(0) is the initial amount and r is the decay rate.
A sample of beryllium-11 was first measured to have 800 atoms.
This means that 
The half-life of the isotope beryllium-11 is 14 seconds.
This means that 
We use this to find r.







So


I think its going to be -1/2