Answer:
c 11.25 I think is correct
 
        
             
        
        
        
Answer: 1211.6585 years
<u>Step-by-step explanation:</u>
The equation for exponential growth is: 
- P: final population
- P₀: initial population
- k: rate of decay (or growth)
- t: time
Use the half life information to find k:

Next, input the information (65% decayed = 35% remaining) and the k-value to find your answer.

 
 
        
             
        
        
        
I think the answer would be d(greater than or equal to) -28
        
                    
             
        
        
        
Answer:
D
Step-by-step explanation: