F(x)=-9/x which is equal to:
f(x)=-9x^(-1)  So the power rule for differentiation is used...
Power rule:  f(x)=x^e, df/dx=ex^(e-1) so:
df/dx=-9(-1)x^(-1-1)
df/dx=9x^(-2)  or if you prefer...
df/dx=9/x^2
df/dx(6)=9/36=1/4
        
             
        
        
        
Answer:
C is correct.
Step-by-step explanation:
Khan Academy said so.
 
        
                    
             
        
        
        
With out deductions the total will be 729.16. but with the deductions the income will be 500.
        
                    
             
        
        
        
Answer:

Step-by-step explanation:

 
        
             
        
        
        
Answer:
is the root of 5 not equal why