In this question they've given us the formula and they just want us to plug in the numbers and get the value.
P is the original value, P=$600
r is the depreciation rate, r=10%=0.1
t is the time in years, t=2

Answer: $486 
 
        
             
        
        
        
Answer:
<u><em>The original price would be 50$.</em></u>
Step-by-step explanation:
To find this answer you have to divide 25% by 100, which equals 0.25.  Now multiply 0.25 by 40 and you get 10$.  Since 10$ was the discount, you just add 10$ + 40$, therefore 50$ is the original price. 
 
        
             
        
        
        
Answer:

Step-by-step explanation:

(2 spreadsheets, 3 databases and 4 presentations, 


As  not mentioned other wise equal chances of all the outcomes is assumed so, by the classical definition of probability,
P(The chosen item is a odd numbered database)
=
 
        
             
        
        
        
5
The reason is because |-5| is equal to 5. The absolute value bars make the number positive.