A function 
is even if 
, and is odd if 
.
Example:
is even, since 
.
is odd, since 
.
Example:
What is revolving credit?
1 answer:
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we know that
the perimeter of the rectangle is equal to
where
P is the perimeter of the rectangle
W is the width of the rectangle
L s the length of the rectangle
In this problem
Substitute the values in the formula above
therefore
the answer is
the length of the longer side of the rectangle is equal to