SOLUTION: Harold is placing a mat of width w + 4 around a 16 in by 20 in portrait. Find an expression for the perimeter of the outer edge of the mat

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Question 1079621: Harold is placing a mat of width w + 4 around a 16 in by 20 in portrait. Find an expression for the perimeter of the outer edge of the mat
Answer by josgarithmetic(39792) About Me  (Show Source):
You can put this solution on YOUR website!
You can start with 2%2816%2B2%28w%2B4%29%29%2B2%2820%2B2%28w%2B4%29%29 and simplify.