Answer:
B: 20%
Step-by-step explanation:
The formula for perimeter is
Side a x2 + side b x2
So just multiply 18 by two, and subtract it from 108
-3.7 is greater than -3.8, but is it not less than of equal to -3.8
Step-by-step explanation:
(1+3x-1)×{1-(3x-1)}
=3x.(1-3x+1)
=3x.3x
=9x^2.