Answer:
Per hour decay of the isotope is 0.96%.
Step-by-step explanation:
Amount of radioactive element remaining after t hours is represented by

where a = initial amount 
t = duration of decay (in hours)
Amount remaining after 1 hour will be,

y = 0.9904a
So amount of decay in one hour = a - 0.9904a
                                                       = 0.0096a gms
Percentage decay every hour = 
                                                   = 
                                                   = 0.958 %
                                                   ≈ 0.96 %
Therefore, per hour decay of the radioactive isotope is 0.96%.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
The response of this would be to say that those people without daytime jobs that are outside the home, are more likely to be home and thus, have more time on their hands to attempt to bake. So basically, the quoted 56% is definitely going to be higher than the population percentage. 
 
        
             
        
        
        
The number of cars that sold on the third week is (P3=26)
The number of cars that sold on the first week is (P4=33)
<u>Step-by-step explanation:</u>
<u>Given:</u>
- The number of cars that sold on the first week is (P0=7)
 
- The number of cars that sold on the second week is (P0=12)
 
We have to find the number of cars being sold on the upcoming week
From the data given above, frame the equation
Pn = Pn −1+7   ( 12-5=7  it denotes the cars sold in the first and the second  week)
Pn=5+7n (cars in the first week and the cars sold in the second week into "n" n is used to find the cars sold in the upcoming weeks)
(If n=3)
Pn=5+7(3)
Pn=26
The number of cars that sold on the third week is (P3=26)
(If n=4)
Pn=5+7(4)
Pn=33
The number of cars that sold on the first week is (P4=33)