Question 1097359
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Use the formula P = 2l + 2w to find the length l of a rectangular lot if the width w is 50 feet and the perimeter P is 290 feet. 
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"l" is confusing in plain text.  Try using L instead.


{{{P=2L+2w}}}
You are given a description and question asking you to solve for L, the length.

{{{P-2w=2L}}}
{{{L=(P-2w)/2}}}
Now just substitute for P and w and evaluate L.