Answer:
8.5n+9+4n-8.5+8.5n+9+4n-8.5
take the like terms together:
8.5n+4n+8.5n+4n=25n
9-8.5+9
=9.5
final answer=25n+9.5
Answer: P = 25n + 35
Explanation:
The perimeter of a rectangle is twice the sum of length and width.
P = 2(l +w)
P = 2((8.5n+9) + (4n +8.5))
P = 2(12.5n +17.5)
P = 25n + 35
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