Answer:
A finance charge is the cost of borrowing money, including interest and other fees. It can be a percentage of the amount borrowed or a flat fee charged by the company. Credit card companies have a variety of ways of computing finance charges.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
it's the 3rd one
Step-by-step explanation:
i used m ath way
 
        
             
        
        
        
Answer:
i got Angle K is congruent to itself , due to reflexive property
Step-by-step explanation:
it doesnt matter
 
        
                    
             
        
        
        
Answer:z=1+0i (rectangular coordinate)
z=cos0+sin0 or exp^i0 (polar coordinate)
Step-by-step explanation:
Unity is 1
Let z be a complex number
z =√1
z=1
z = x + iy(rectangular coordinate)
z=rcos(theta)+isin(theta) (polar coordinate)
For rectangular form, since unity is a real value, x=1 and y=0(no complex value)
z=1+0i (rectangular)
For polar, we need to calculate 'r' and theta. 
r=√x^2+y^2
r=√1+0
r=1
theta= arctan(y/x) = arctan(0/1) = 0degree.
z=cos0+sin0 or exp^i0