Hi,



A rectangle has a length which is 7 ft less than three times the width. 

The area is 348 square feet

A = lw

 (3x-7)x = 348ft^2

  3x^2 - 7x - 348 = 0    |format a^2 + bx + c = 0





  x = 12ft, the width  (throwing out negative solution for unit measure

and length is 29ft    

CHECKING our answer***

  12ft•29ft = 348ft^2

Wish You the Best in your Studies.

 

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