Answer:
Rate of interest will be 1.33 %
Return on this investment =
%
Step-by-step explanation:
We have given principle amount P = $9000
Time = 61 days = 
We have to find the rate of interest
Total amount produce at the end of term = $9020
So interest = $9020 - $9000 = $20
We know that simple interest 

%
Return on this investment =
%
41 is a prime number so the factors are only 1 and 41
THE ANSWER IS EQUILATERAL BECAUSE THEY ALL HAVE EQUAL SIDES
The common denominator is (x+2)(x-2)
notice that x²-4 is the difference of two square
when you solve it you get (x+2)(x-2). (x+2) can go into (x+2)(x-2).