Answer: 
Step-by-step explanation:
Given : Two opposite sides of a rectangle are each of length x.
Let the other adjacent side be y.
The perimeter of the rectangle is 12 units.
Perimeter of rectangle is given by :-

The area of rectangle is given by :-

Hence, the area as a function x = 
It might be like this 107+31 equal 138
10/14, 15/21, 20/28, 25/35
Just multiply numerator and denominator by the same number
Answer:
C: 8
Step-by-step explanation:
8^3=512
if it was -8^3 it would equal -512