Question 302437
Area of a rectangle = width x length 

let's width be w and length be L

w = 7 + L 

Area : L(7+L) = 330 

{{{7L + L^2 = 330}}}
{{{ L^2 +7L - 330 = 0 }}}
{{{ (L - 15)(L + 2)=0}}}

L -15 = 0 , L = 15 ft or L + 2 = 0 L = -2ft (N/A)

Length = 15 ft 
Therefore width = 7 + 15 = 22 ft