The correct answer of 16/38 simplified is 8/19
        
             
        
        
        
Answer:
4 
Step-by-step explanation:
It works with the second one
 
        
             
        
        
        
Answer
the correct answer should be 109
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.
The function to represent the mass of the sample after t days is 
Step-by-step explanation:
Exponential equation of decay:
The exponential equation for the amount of a substance is given by:

In which A(0) is the initial amount and r is the decay rate, as a decimal.
Hourly rate of change:
Decreases 26% by day. A day has 24 hours. This means that  ; We use this to find r.
; We use this to find r.



![\sqrt[24]{(1-r)^{24}} = \sqrt[24]{0.74}](https://tex.z-dn.net/?f=%5Csqrt%5B24%5D%7B%281-r%29%5E%7B24%7D%7D%20%3D%20%5Csqrt%5B24%5D%7B0.74%7D)



The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.
Starts out with 810 grams of Element X
This means that 
Element X is a radioactive isotope such that its mass decreases by 26% every day. 
This means that we use, for this equation, r = 0.26.
The equation is:



The function to represent the mass of the sample after t days is 
 
        
             
        
        
        
Answer:
1, 2, and 5
Step-by-step explanation: