Answer:
the simple interest in both cases is 200 and 756 respectively 
Step-by-step explanation:
The computation of the simple interest is shown below:
As we know that 
Simple interest = P × r% × t
So
a. Simple interest is 
= 2,500 × 8% × 1
= 200
b. The simple interest is 
= 4,200 × 6% × 3
= 756
Hence, the simple interest in both cases is 200 and 756 respectively 
 
        
             
        
        
        
I would say the correct answer is B
I might be wrong 
        
             
        
        
        
Answer:
2x^2+x-1/x^2-1
x^2+11x+18/x^2-11x+18
2x^2-5x+3/x^2+4x+3
Step-by-step explanation:
1.2 and 5