Answer:D
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
.19 = 19/100
.864 = 86.4/100
.5348 = 53.48 /100 
I multiplied the decimal by 100 to get what it was before which is the same as moving two decimal places to the right and divided by 100
if any confusion ask
 
        
                    
             
        
        
        
Answer:
   $621.08
Step-by-step explanation:
The formula for the amount (A) resulting from principal P being invested at rate r continuously compounded for period t is ...
   A = Pe^(rt)
Filling in the given numbers and doing the arithmetic, we get ...
   A = $400e^(0.055·8) ≈ $621.08
 
        
             
        
        
        
Answer:
Step-by-step explanation:1
1/2 years which is 1 year and 5 months.
Explanation:
The formula for simple interest is
You can either substitute the given values first and the solve for 
T, or you can transpose the formula to have 
T as the subject.
T=100xSIPR
T=100 x 637.50 
T=100×637.502500×17
T=1.5
As time is always in years, this means it was for 
112 years which is 1 year and 5
months