Answer: radius: 6, center: (3,-4)
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: i.. do.... not... know.. 
Step-by-step explanation:
 
        
             
        
        
        
Answer: $18,617.75 is the answer
$87,525-$77,100=$10,425 (the amount over $77,100)
$10,425 x .28=$2,919 (the 28% taxed amount over $77,100)
$2,919+$15,698.75 (the already taxed amount in the chart)=$18,617.75
Step-by-step explanation:
 
        
                    
             
        
        
        
Given problem is 
To simplify that we need to multiply and divide by conjugate of the denominator
conjugate of denominator 6+i will be 6-i as we just need to change sign of the imaginary part
Now multiply and divide by 6-i







Hence final answer is 