By first principles, the derivative is

Use the binomial theorem to expand the numerator:


where

The first term is eliminated, and the limit is

A power of  in every term of the numerator cancels with
 in every term of the numerator cancels with  in the denominator:
 in the denominator:

Finally, each term containing  approaches 0 as
 approaches 0 as  , and the derivative is
, and the derivative is

 
        
             
        
        
        
I=PRT
r=rat
P=present amount
I=interst
t=time in yeare
2 years
16%
3000
I=2*3000*0.16
I=$960 
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation:
I got this answer correct on a test
 
        
             
        
        
        
12000*100/80=15000 coz 12000 is 80% that's why you divide by 80 and multiply by 100
        
             
        
        
        
Median is the middle number. 
Rearrange the numbers to smallest to biggest. 
70, 77, 80, _, 82, 87, 88
If the median of the data set is 81 the middle number needs to be 81. 
So the missing number is 81. 
70, 77, 80, 81, 82, 87, 88