The area of a rectangle is 250ft. You want the length to be 5ft longer than twice its width. What should the dimensions of the rectangle be.

A=lw=250 
and 
l=2w+5 

so we can write
(2w+5)w=250 
or 
2w^2+5w-250=0 
which has w=10 as one solution 
therefore l=2(10)+5=25 
so 10ft x 25ft 


:)